Ryzen 9 7950X3D Undervolt & Overclock to 5900 MHz With Crosshair X670E Extreme | SkatterBencher #56

In today's video, I overclock the AMD Ryzen 9 7950X3D Raphael CPU up to 5900 MHz with the ASUS ROG Crosshair X670E Extreme motherboard and EK custom loop water cooling.
Before we get going, I'd like to thank the folks at AMD for enabling overclocking support on X3D CPUs. While this may age like milk if they decide to lock OC after launch, it's nice to see a change in approach from the first X3D CPU, which was entirely locked for overclocking.
That's not to say overclocking is fully unlocked or as straightforward as with regular Ryzen 7000 CPUs (it certainly isn't), but the intent is there, and I appreciate that!
All right, we have lots to cover, so let's jump straight in.
00:00 Intro
05:07 Stock Performance
07:08 OC Strategy #1: PBO 2 + EXPO
21:21 OC Strategy #2: PBO Curve Optimized
28:16 OC Strategy #3: PBO Eclk Tuned
35:26 Let's Wrap Things Up
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Hardware list:
- AMD Ryzen 9 7950X3D
- ASUS ROG Crosshair X670E Extreme amzn.to/3ISWvIi
- EK-Quantum Velocity2 amzn.to/3IO7dQG
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- GSKILL Trident Z5 Neo DDR5-6400 32GB amzn.to/3STSNk7
- Enermax EMR1500EWT Maxrevo 1500W amzn.to/3XSg5di
- ASUS ROG Strix RTX 2080 TI amzn.to/3Gwcvz6
- AORUS RGB M.2 NVMe SSD 512GB amzn.to/3VmzTUc
- Open Benchtable V2 openbenchtable.com/
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Check out more videos to learn how to overclock:
- Radeon Graphics (Ryzen 7000) to 3.1G: • Radeon Graphics (Ryzen...
- Ryzen 9 7900 to 5.6G: • Ryzen 9 7900 Undervolt...
- Core i9-13900K P-core to 6.5G: • Core i9-13900K P-cores...
- Core i9-13900K to 6.0G: • Core i9-13900K Undervo...
- Core i5-13600K to 6.2G: • Core i5-13600K Overclo...
- Core i7-13700K to 6.0G: • Core i7-13700K Undervo...
- Ryzen 5 7600X to 5.5G: • Ryzen 5 7600X Undervol...
- Ryzen 7 7700X to 5.75G: • Ryzen 7 7700X Undervol...
- Ryzen 9 7900X to 5.9G: • Ryzen 9 7900X Undervol...
- Ryzen 9 7950X to 5.95G: • Ryzen 9 7950X Undervol...
- Ryzen Threadripper 5990X to 4.85G: • Ryzen Threadripper 599...
- GeForce GTX 1650 to 2.2G: • GeForce GTX 1650 Overc...
- Radeon RX 6500 XT to 3.0G: • Radeon RX 6500 XT Unde...
- GeForce GT 1030 to 2.05: • GeForce GT 1030 Overcl...
- Ryzen 7 5800X3D to 4.7G: • Ryzen 7 5800X3D Overcl...
- UHD Graphics 730 to 1.8G: • UHD Graphics 730 (12th...
- Core i5-12400 to 5.3G: • Core i5-12400 Overcloc...
- Ryzen Threadripper 3990X to 4.5G: • Ryzen Threadripper 399...
- Ryzen 3 5300GE to 4.6G: • Ryzen 3 5300GE Undervo...
- Core i9-12900KF to 5.7G: • Core i9-12900KF Overcl...
- UHD Graphics 770 to 2.4G: • UHD Graphics 770 (12th...
- Core i5-12600KF to 5.5G: • Core i5-12600KF Overcl...
- Core i7-12700K to 5.4G: • Core i7-12700K Overclo...
- Core i9-12900K to 5.6G: • Core i9-12900K Overclo...
- Ryzen 9 5900 (B2) to 5.15G: • Ryzen 9 5900 (B2) Unde...
- UHD Graphics 750 to 1.75G: • UHD Graphics 750 (11th...
- Ryzen 9 5900X to 5.2G: • Ryzen 9 5900X Undervol...
- Core i9-11900K to 5.6G: • Core i9-11900K Overclo...
- Ryzen 7 5700G to 4.85G: • Ryzen 7 5700G Overcloc...
- Core i5-11600K to 5.1G: • Core i5-11600K Overclo...
- Core i7-11700K to 5.3G: • 5 Minute Overclock: Co...
- Core i9-11900K to 5.5G: • Core i9-11900K Overclo...
- Core i9-10850K to 5.4G: • Core i9-10850K Overclo...
- Core i9-10900K to 6.0G: • Core i9-10900K Overclo...
- Ryzen 5 5600X to 4.85G: • Ryzen 5 5600X Overcloc...
- Ryzen 7 5800X to 4.775G: • Ryzen 7 5800X Overcloc...
- Ryzen 9 5900X to 4.75G: • Ryzen 9 5900X Overcloc...
- Ryzen 9 5950X to 4.65G: • Ryzen 9 5950X Overcloc...
- Ryzen 7 3800XT to 4.6G: • Ryzen 7 3800XT Overclo...
- Ryzen 9 3900XT to 4.55G: • Ryzen 9 3900XT Overclo...
- Core i5-10600K to 5.2G: • Core i5-10600K Overclo...
- Core i7-10700K to 5.3G: • Core i7-10700K Overclo...
- Core i9-10900K to 5.4G: • Core i9-10900K Overclo...
Any questions on our overclocking, ask in the comments! If you wish to help us add subtitles to this video, please contact us via twitter @skatterbencher

[@pedroteixeira4369]

Before asking you what I want to ask let me first tell you that you are the very best overclocker educator I have ever seen and your metodological aproach to overclocking is everything anyone would hope for. The quality of the information you put into these videos is quite amazing, gold literally. Sad so few people know about you and your channel. I think this is simply a question of time. Now, about my question: Please consider deliding the 7950x3d and then overclocking it to see how the improved thermal margins affect the overclock potential.

[@SkatterBencher]

Hi Pedro, thanks for the kind words. I really appreciate it! I don't think I've ever delidded a CPU before, so I'm a little hesitant ... but I might consider it (for science!). Thanks for the suggestion.

[@pedroteixeira4369]

@@SkatterBencher Ok, so if you end up doing it Der8auer sells a tool that makes deliding very easy and he posted a delid video of the 7950X3D. A previous video analysis of deliding a 7950 ( also from Der8auer ) showed a huge drop in temps when used bare core on block, and this is the reason I think it may be worth the effort.

[@billkillernic]

@@SkatterBencher If you delid it use some sort of conformal coating on everything but the cores and I/O chip + take into account that the IHS height is removed and make proper modifications to fit the cooler flat on the dies last but not least try to do that with the 7950x too :P

[@jgvtc559]

​@@SkatterBencherget a whetstone for knife sharpening and just lap it eith wd40 works like a charm

[@Hyp33rX]

your knwoledge is amazing, thanks for the vid

[@AshtonCoolman]

Subbed! I really appreciate the deep dive. A lot of channels glance over AMD's technical aspects like this, while they explain Intel's.

[@DragonOfTheMortalKombat]

And then they complain that AMD doesn't offer good OC 🙃

[@AshtonCoolman]

@@DragonOfTheMortalKombat intel fans don't like anything that's different than the way intel or Nvidia do things😂(yes I included Nvidia on purpose in this statement. We all know it to be true.)

[@soulbytes]

This class is interesting. Geeting to know something that you have never even know what is all about. Looking forward for the next video. I have done pretty well oc on my 13700k ..as a beginner because of this channel. Thanks.

[@AMDRyzenEnthusiastGroup]

Exceptionally good information!

[@arkama67]

At least a real clear unbiased journalistic review, thank you sir for delivering ! I would love to see what all core OC you can achieve.

[@nizzen2]

Nice job as usual! :D

[@brokenintel]

Thank you so much for this video! I didn't have time to tweak each core so I applied all core negative offset -15 to my 7950X3D and BAM! Hit 5.2 ghz all core during gaming. I am using the same board as you with the LT720 cooler!

[@SkatterBencher]

Nice!

[@brokenintel]

@@SkatterBencher Can you please do a video on Core Flex bios settings?

[@TheAnoniemo]

You know there's an embargo about to drop when SkatterBencher releases his video 15 minutes early every time...

[@BaneSIlvermoon]

Oh nice. I just ordered the same motherboard last week. Stoked to watch the rest of this video now. ::edit:: Nice, same memory sticks too.

[@SkatterBencher]

Enjoy the board!

[@BaBaNaNaBa]

I got the gene, glad I decided for a board with external clock gen

[@MrGatz]

This was a good video to understand the mechanics behind how the cpu behaves. Now we all can't copy each other's CO settings (silicon lottery), I just did a safe CO of -15 all cores & and Fmax of +150 & PBO was set to Manual (I only changed and set my PPT to 150w to stay away from diminishing power returns). I hit the 5900mhz on 3 non Vcache cores, others max out at like 5800-5875mhz. The system is stable under all conditions including High and more importantly the lower workload scenarios where many aggressive CO settings give too little voltage to the cores and crash the system. In the past with Ryzen overclocking found that when I set CO negative too aggressively, it's the lower workloads where the CCDs clock lower and you end up too low left on the VF curve and receive too little voltage for those lower frequencies and boom you crash. So be mindful that stability is not only at the high usage use case, but also the lower usage use cases. The Cache CCD, all cores hit 5250mhz. Max temp under Cinebench 10min multi core is around 79C with a Noctua Air cooler NH-D15 (with H-2 paste) in a Fractal Design Torrent case (So airflow to the max). I didn't want to check each core for WHEA errors and tune it further so i went the lazy all core route; I'm happy with it. This 7950X3D is truly an efficiency king, and a jack of all trades.

[@Tarrgetthis]

My asus 670 won't let me pbo

[@ettepet9308]

Unfortunately running Cinebench “stably” doesn’t mean much as it isn’t a properly stressing test. So in reality your modification using air-cooling will probably be less than your lazy attempt. -10 already is quite taxing.

[@Sickoloko24]

you deserve a millinon subs my brother

[@tannerwolfemortimer1190]

Thanks!

[@mattcude6917]

Nice info

[@marcusaguirre7032]

Damn I feel disappointed in myself i just found you out right now. Thanks to tomshardware for sending me your way. Great freaking video.

[@RMabudabi]

woah nice content here

[@spiriter666]

Hey Skatter. Thanks for your tutorials! I have a pretty good chip -I managed to get my 7950X3D boosting to 5960 mhz with -40 CO. Around 80W usage in games :) I'm super happy with it, awesome upgrade after 5900X for 4k gaming / VR / rendering

[@SkatterBencher]

Nice, what a great chip!

[@zoeydee7168]

Did you use -40 for all cores or just specific ones, ie, have the same here and dying to know.

[@spiriter666]

@@zoeydee7168 All cores. Although on the newest bios from Gigabyte -40 was causing instability in long gaming sessions. -30 seemed fine, but I downgraded the bios:)

[@zoeydee7168]

@@spiriter666 awesome. Thank you for following up as I have been tweaking mine as well and -30 might work for me, ie, -35 seems fickle and unstable in, I think, low loadings

[@shreyasd4663]

Amazing

[@bismuth7730]

Wow this guy is good

[@jimbodee4043]

I am watching your channel for the 1st time today. Very detailed and informative strategies to approach this specific chip from AMD for optimising. I wonder if you have access to any other motherboards for AM5 and what specification on the Rog made you choose that motherboard.

[@SkatterBencher]

No particular reason why I picked the X670E Extreme. I just figured it's a good match for AMD's most high-end chip :)

[@BaBaNaNaBa]

Very very in depth video. Extremely well done! Two questions I had, would your #3rd overclocking method benefit from deliding the CPU and ultimately enable higher stable clocks? Second question min 13:05, I dunno if I got this right. Technically speaking does that mean a (simular binned) 7800x3d will performe better (up to 8 cores ofc) than a 7950x3D cause it has a favorable Voltage for the 3d vcache CCD only? Hope those questions weren't confusing or kinda wrong. Tysm in advance!!!

[@stevewatson6839]

2nd question. We won't know 'til that part drops. Your favourite techtuber breaks NDA; you see that techtuber reviewing that company's goods no more. Wait for real-world results from your favourite techtubers. Theoretical answers have a good likelihood of being wrong.

[@SkatterBencher]

As far as I understand AMD's Precision Boost algorithm, lower temperatures will always help to achieve higher frequencies. That's because it would allow running a different VFT point. X voltage for Y frequency at Z temperature -> lower Z means higher Y. That said, I think the main limiter for the 7950X3D isn't temperature since in none of my OC strategies I hit the TjMax of 89C. The main limiter is the allowed CPU voltage for the V-Cache CCD. Can't answer the 7800X3D question since I haven't tried it yet, but I assume it's a similar situation like with the X-SKUs where the best CCDs go into the Ryzen 9 and lesser CCDs go into the Ryzen 7/5s. I assume the V-Cache VID limit with 7800X3D will be similarly constraining, just that 7800X3D has lower Fmax. Unfortunately, but also a little excitingly, if the positive Fmax boost offset is also locked on 7800X3D, it means Async ECLK will be the only viable path for overclocking.

[@wesleymirandarocha4919]

Hey man! First of all, nice work! Your video/instructions were clear and precise. Tks and keep up! One doubt If I use the second strategy to OC mine, should I use Asus core flex and should I set the SMU to driver too?

[@SkatterBencher]

It's not a must to configure Core Flex to use OC Strategy #2. Core Flex and the SMU option control which CCD gets priority for certain workloads. My OC Strategy #2 just help squeeze a little more performance out of the CCD.

[@iLegionaire3755]

The 7950X3D may not clock as high as the Intel 13900KS, but it’s the most power efficient CPU I’ve ever seen in action! Tempted to switch. Update: Switched from 10900K to the 7950X3D!

[@jgvtc559]

I'm thinking of building a system out of this board and that chip Want to final form my x570 5600x to a 5800x3d first though

[@teodorgroza4645]

Power efficiency I didn't even though it is possible to get from the new high end cpus. I've got the 7800x3d and it consumes under 50w no matter what I do to it. During CPU-Z stress test I get 6700 score with 55W consumption. With my 4.4 ghz oc 5820k I didn't measure, but I expect into the 150-200w for a 1600 score or so. I am just blown by the performance of the 7800x3d given the fact that it only got 2 more cores (4 threads) and it clocks at around 4.8-5 ghz. If i were to not OC the 5820k, I would get around 1200 score, 1300. With the 7800x3d I get 1200 with running one core/2 threads only.. Just amazing

[@kvitoroulis]

Amazing content. Glad i run into your channel! Question - is there a strategy to identify the better cores! Also on strat #3, what was your thinking for setting the positive voltage on the cores? Why did you group them as you did? Once again, outstanding content and well presented!

[@SkatterBencher]

The only working strategy (I've found) is testing them yourself, unfortunately. In OC Strategy #3 I use Eclk to overclock the CPU. When using the Eclk, we effectively increase the frequency of a V/F point. So, if the V/F point was 5000 at 1.25V, with 101 MHz ECLK it's 5050 at 1.25V. Some cores may not be able to have their V/F curve adjusted too much and become unstable due to too low voltage for a certain frequency. With a positive curve optimizer, we can offset a core's V/F curve to use more voltage. So let's say that 5050 isn't stable at 1.25V, with a CO of +5 maybe the voltage is 1.275V and then the core is stable again.

[@gurugamer8632]

For video editing in apps like adobe premiere , after effects and DaVinci Resolve which CPU is the best for performance? I9 13900K , 13900KS or AMD 7950X or AMD 7950X3D?

[@no-one_no1406]

eclk 1 mode! wow! We can now overclock locked cpu's without breaking the rest of the system! Now we just need to find a way to trick the voltage limit on the x3d ccd at low temperatures.

[@Bayonet1809]

The heterogenous ccds makes overclocking very difficult, I hope you make a video for the upcoming 7800x3D as it should both be simpler and more popular.

[@SkatterBencher]

Thanks for the suggestion, I will try :)

[@RobertSmith-lh6hg]

Since it homogeneous it's going to be essentially the same as doing it on 5800 x 3D except now you have asynchronous clock, therefore it's easier.

[@Origin22]

SkatterBencher I have a question, for the past few days I have been attempting all iterations of your overlocking on my 7950X3D on a B650 AORUS Elite Motherboard. I have compared and contrasted multiple videos from yourself in which you either use my CPU or my Motherboard. I swear I am doing the correct things but I can seem to get a better average GHz than around 4.7 - If you have an idea for what I could be doing wrong I would greatly appreciate the help.

[@LQ-gaming]

any idea why the rog strix x670e-i (the mini itx model) does not have the eClock mode in the bios???

[@spl4t1]

An update with new agesa version would be helpful.

[@fifise8486]

First thx for the great and detail explainantion, with your help I am starting to be able to OC my firt AMD CPU , What is your setting for the 2 minutes test with Corecycle ?

[@SkatterBencher]

Y-Cruncher 00-x86 to check high boost and then also Y-Cruncher 19-ZN2 to check high load (AVX2 is usually the main struggle for me)

[@GoodboiOfficial]

As someone already said. Please consider delidding a cpu. You make the best oc videos I have seen. But the lowered temps could make it even more Interesting.

[@SkatterBencher]

Thanks for the suggestion, will consider it :)

[@KinGDGaminG63]

what's your fave cpu skatter? if u was serious about gaming and could get only one? what platform? what cpu? thanks for your work... been watching a min now..

[@SkatterBencher]

I think right now my favorite CPU is the 13900KS+Z790 due to the overclocking headroom with the TEC and the comprehensive set of overclocking tools that comes with the CPU.

[@KinGDGaminG63]

@@SkatterBencher thank you sir... ill save up lol im still on i712700k

[@ralstonfurstonberg2113]

Can you please link your per core SP values? my x3d has a SP score of 110 and yours has a sp of 111. Somehow you can undervolt wayy lower then me. i get crashes on -5 on the x3d cores

[@skypickle29]

please consider adding benchmarks for msfs and dcs. in the past, the 5800x3d showed remarkable gains for these titles. the 7950 x3d offers an interesting option. you could disable the v-cache ccd or the plain ccd. thus you have controlled for all other variables(memory, voltages, power supply, etc) to see the impact of cache alone

[@SkatterBencher]

Thanks for the suggestion. Are there any standardized or built-in benchmarks for MSFS/DCS?

[@gurugamer8632]

For video editing in apps like adobe premiere , after effects and DaVinci Resolve which CPU is the best for performance? I9 13900K , 13900KS or AMD 7950X or AMD 7950X3D?

[@FrostKeygen]

@@gurugamer8632 The same question applies

[@MustafaGT]

Hey SkatyerBencher, can you please let me know if you are getting Q code 8F with recent Bios and 7950X3D? I have this Q code which I have no idea what it means. Everything works and boots up perfectly though.

[@netbat4399]

can I overclock it via bclk?

[@TheAv0lution]

I see in your segment for strategy #2 for Curve Optimizer, you have 25 shown as a selection for core 7, but then state it should be 35. Pointing this out to get clarification so others know. Thanks for these informative videos btw. I am trying to get mine to do strat #2, but it BSODs :( (all BIOS settings cleared b4 and followed as dictated) Edit: can you do a video on how to oc using strat #2 curve optimizer for individualized silicon? ty

[@SkatterBencher]

Oops, thanks for letting me know. I will pay more attention to the curve optimizer settings for next videos. I've long had it on my backlog to make a video on how to do manual curve optimizer testing. Just haven't gotten around to do it ... :(

[@TheAv0lution]

@@SkatterBencher Thanks for your amazing work and quick reply! I'm trying to glean more info to try and attempt this myself using your videos.

[@RobertSmith-lh6hg]

The values he puts in mean absolutely nothing because they're for his CPU, you need to use the values for your CPU....

[@bobjimmmy]

How long did it take you to dial in per core co? Wondering If i can be bothered to do per core and just stick with my all core

[@SkatterBencher]

Per Core CO takes way too long. Unless PC finetuning is your hobby, I wouldn't recommend it :)

[@yukegaming8788]

Do the worse cores on the X3D CCD need the higher positive CO value to operate stable with ECLK attempt? So i can check the hierarchy of the cores and go from there?

[@SkatterBencher]

In my experience, the CPU core overclocking capability does not differ between X3D and non-X3D CCDs. It's just that they're limited by the V-Cache in frequency and temperature.

[@kalebkloppe6193]

So ECLK doesn’t affect other devices like USB and SATA, meaning it’s safe for daily use? Also, the theoretical maximum speeds you can get sound like 6250 (non3D) / 5500 (3D) using PBO + ECLK. is that right?

[@SkatterBencher]

Reference clock tuning doesn't affect anything except for the CPU clocks, but only if you're in ECLK1 mode. It's indeed safe for daily use. If you're overclocking the reference clock in ICLK (internal clock) or ECLK0 mode, then it will affect those parts. Theoretical maximum speed would be higher since ECLK can go pretty high. I achieved 170 MHz on water cooling at launch valid.x86.fr/ilmj1v. Let's say you stick to 110 MHz ECLK and a 200 MHz Fmax boost override, then the 7950X3D frequency would be 5775 (3D) / 6545 (non-3D).

[@kalebkloppe6193]

@@SkatterBencher thank you! I misunderstood and thought the ECLK limit was 105.

[@carl4889]

Extrapolating on your numbers, it sounds like the 7800X3D might be able to hit ~5.5GHz on a 105 ECLK. That sounds extremely compelling, at least for people who aren't doing productivity workloads.

[@SkatterBencher]

7800X3D has a listed maximum boost frequency of 5 GHz, so I assume the fused Fmax will be 5050 MHz. Also assuming the Fmax Boost Override will be locked, then 105eclk will give you ~ 5.3G Based on my limited experience with this 1 X3D sample and inferring from the conservative boost clock of the 7800X3D, I think the V-Cache is very sensitive and tricky to overclock. I would probably expect V-Cache CCDs to not clock much higher than 5.45G for the best ones and 5.15G for the worst ones.

[@freddie_laker]

The thing that I haven't figured out is how you test the strength of each individual core so you can fine tune at a core level. Is it just trial and error?

[@SkatterBencher]

Yes, per core tuning is trial and error

[@duckilythelovely3040]

I feel an aggressive undervolt would actually bring up those frequencies much higher while reducing temperatures and increasing performance without the need to overclock and increase power

[@XmaXma6]

Isnt OC Strategy 2 just that?

[@InnerTriggerer]

Is Eclk mode motherboards specific feature? My Asus Proart X670E doesn’t show the option. (Lasted bios version)

[@SkatterBencher]

ECLK mode is a feature available for Raphael (Zen 4) CPUs to use an external clock generator instead of the internal clock generator. It is up to the board manufacturers to decide whether to add those clock generators to the boards or not.

[@Fin4L6are]

bclk OC of a 7800X3D sounds promising

[@SkatterBencher]

Agreed :)

[@iikatinggangsengii2471]

theres risk of damaging the 3d cache, i wouldnt oc an x3d

[@LordGryllwotth]

Thanks! I am going to try to find the best setup for gaming. I have Asus o x3D gaming settings on. But want to figure out what's best. Star Citizen loads first on CCD1 and switches to CCD0 when ingame. The game is limited by the rendering thread, and to get the best performance I think it need to run that on the fastest core, don't know how much cache it needs. Overall I have only seen about max 35w usage. I know a little here and there, but need to get my brain to rap around hwmonitor, look at performance. I used Asus windows and did a setting there that really screwed me over. A bios reset didnt even help. Exbo 1 suddenly also didn't work, so using number 2, but could not see any difference in settings applied. 6GHz C30 Corsair hynix. I should have gone for an Intel setup since I need a better 1 core performance. But that ahip is sailed now. I upgraded from a Ryzen 1600x!

[@user-bv7et6nz6y]

Why some cores (0 - 7) has boost about 5.2GHz only (in my case)? Is it possible to setup all to work at 5.7?

[@tannerwolfemortimer1190]

I can kind of answer this, but I need to know of you watched the whole video first

[@Evenaardez]

Lets say while doing ECLK tuning the computer crashes, is there a button on the motherboard you press to allow you to return to bios without cmos?

[@SkatterBencher]

Most motherboards now have recovery routines that boot up at a lower frequency (e.g. 100 mhz eclk). So you should be able to always boot into the BIOS. Some boards also have "retry" buttons and "safeboot" buttons which force this kind of behavior.

[@Evenaardez]

@@SkatterBencher Does the x670e extreme have the retry button? I have the same motherboard.

[@oscarnave]

Hello my friend, would you give me some tips on how to oc my brand new 7900x3d? Great video and many thanks :)

[@SkatterBencher]

I am finishing my 7900X3D overclocking guide this week

[@oscarnave]

@@SkatterBencher I’ll be waiting for! I just got a 7900x3d and I don’t understand none of this stuff 😅

[@bes12000]

I have a 7900X3D, haven't installed it yet, would like to know what settings to use for it, if you make one for that one, would be appreciated.

[@malborboss]

Same situation. I suppose its pretty similar for us as it is for 7950

[@eliovisca4340]

ciao, 7900x3d in 4k faccio meno fps del 7700x si può fare qualcosa per migliorare le prestazioni in 4k?

[@spl4t1]

For those struggling on later bios make sure you set pbo power limits. On the Asus x670e-e I think they limited it on auto. There should be a screenshot of what they should be on the scatterbencher page for the 7950x3d. Once i set TDC to 160 my numbers went up.

[@Adel-sj4ue]

I want to get b650e motherboard as i want to start learning overclocking Any recomendation Some says b650e aorus master is the best???

[@ryanodneal7001]

Wish I could post screenshots of gaming data here.

[@Gschwerl123]

Why?

[@radek7573]

i do all what you with 3 metod and no have boost in 3d mark more than 5150mhz... can you help or maybe do another guide

[@arizonakevlar]

Does anyone know if the V cache CCD on the 7900x3d has the same fixed freq cap (5250) as shown here for the 7950x3d? Since it has fewer active cores I was wondering if it might have a slightly higher fixed cap, which might be a good trade off if you don't regularly need all the additional cores of the 7950 for productivity.

[@ShadowlessDeath47]

It has a lower cap, AMD's website says 5000. I imagine you might be able to push it higher than the 7950x3d with good ECLK tuning, but I also think the better binned chips are going into the 7950x3d so it's probably less likely you'll get a chip you can really push that hard.

[@leoh18]

Do you agree that ryzen 7 is ram latency sensitive ? I've seen many videos showing huge improvements replacing ddr5 cas 40 for a cas 30 on the same frequency

[@SkatterBencher]

I haven't done enough testing to give you a meaningful reply, sorry

[@AMDRyzenEnthusiastGroup]

There's a measurable difference both in benchmarks and real-world scenarios, like gaming. The difference between say, 6000 CL40 and 6000 CL30 is pretty substantial (assuming sub-timings are equal). Whether or not it would qualify as being "huge improvements" is kind of subjective, but there's certainly a noticeable difference.

[@TheHighborn]

I hope other vendors will do something like asus. (since i have an msi board lol)

[@danchan5620]

can you do eclk with b650e strix?

[@Timmaaaigh]

Do all the cores run above 5GHz in the likes of Cinebench MT, when doing the PBO + CO tuning?

[@SkatterBencher]

Yes, give or take a couple dozen mhz

[@Timmaaaigh]

@@SkatterBencher Thank you!

[@jimwindy]

Great video! QQ: Why do you recommend these very specific CO negative offsets? I thought every CPU would be different, would love a similar guide for the 7800x3d when launched!

[@SkatterBencher]

You're right that every CPU has different optimal CO negative offsets. I try my best to highlight in the video that one shouldn't 1:1 copy the settings and apply to their system, but it's not easy. I decide to still show the settings because it may help people feel more comfortable using those tools

[@SuckacockiCumamoto]

why does the cpu show me only 8 cores in windows?

[@TheRealBix]

But... What is Shamino Boost Curve tool you talk about ?

[@SkatterBencher]

rog-forum.asus.com/t5/amd-600-series/x670-resource/m-p/901576 > ocpak/octools > DB Query > AMD V/F > Get Boost Curve

[@eRwdy]

Have you tried lowering the base frequency of the cores with cache (underclock), for example to 4.0 ghz, and raising the frequency of the others. Could that be possible?

[@tannerwolfemortimer1190]

He answers this in the video around 12 minutes

[@hedroxthelegend]

Could you please do the same, but with a Gigabyte board?

[@solomonshv]

these settings didn't work for me, but the video did nudge me in the right direction. i ended up with -15 offset on all cores, and +100 mhz. that's the best i could do with my 7950x3d. thanks a bunch

[@watsup39]

do you know how the core flex will work when mixing workloads? aka running google chrome WHILE ALSO playing a game favoring cache?

[@SkatterBencher]

Core Flex doesn't take into account the type of workload, so the X3D gaming profile will just works according to the core current. I haven't done too much testing with the profile, so I'm hoping someone else does the dirty work and comes up with a conclusion on what's the best approach for CCD prioritization :)

[@watsup39]

@@SkatterBencher thank you so much for responding. I really appreciate it. I felt like this was the case. It seems like the flex profile would possibly make a lot more mistakes if you run other programs on the background because of core current...

[@tyriddik2282]

If you disable the non 3d ccd, how high can you get the 3d cores?

[@SkatterBencher]

Not much higher than when the non-3D CCD is enabled. The highest I've seen is 5.5G+ but it was obviously not very stable. The 3D V-Cache is tricky to overclock :)

[@tyriddik2282]

​@@SkatterBencher I'm seeing the same behavior now that mine came in. Some notes from my setup/testing thus far. Asus ROG Strix X670e-i seems to be missing the eCLK setting in the bios. Enabling the memory learning setting like we did with the 7600x for faster boot times led to some very poor memory stability. My temps hit 90° rather quickly on this chip with the thermalright pressure plate. I may try the stock bracket to see if that helps, but did you hit 90° while benchmarking?

[@tarkaltuntas1381]

How can i make this with msi motherboard?

[@magnusrusty1544]

can u make this in a gigabyte x670e motherboard?

[@thedeadliest4380]

So why does your os show a 7950x ?

[@peterto-xz1gu]

where is 5900 mhz ?? i don't see it in video.

[@velo1337]

thx for using superpi

[@trevoC132]

Could this easily be applied to a 7900x3D or would your 7900x OC video be more relevant?

[@SkatterBencher]

For the 7900X3D, this video is more relevant because it will have similar limitations with the V-Cache CCD

[@trevoC132]

@@SkatterBencher Appreciate the reply. Great videos thanks.

[@orhantahan181]

Hi, are these settings possible with x670e hero?

[@SkatterBencher]

The overclocking process will be similar with the Hero, yes. However, obviously, the actual settings will differ based on the capabilities of your CPU/system

[@Kai_O_Cad]

I'd like this guy to overclock my bank account

[@BatmanRobinson]

So the AMD Ryzen 9 7950X3D is compatible with the cross hair x670e for some reason it’s telling me it’s incompatible do you know why it would be saying that?

[@AMDRyzenEnthusiastGroup]

Not sure why, because it is absolutely compatible. The 7950X3D is compatible with all X670 and X670E motherboards.

[@ZerofoolBG]

To the uneducated, you make it sound like ECLK is a feature of every AM5 motherboard. It is not, only the most expensive, highest-end boards have it. It's important to note this for potential buyers, who are not following closely the scene. If you plan on getting 7800X3D with a decent B650(E) board (like myself), don't expect to find the ECLK / Asynchronous Clock feature. We're left with only the PBO2 and Curve Optimiser strategy.

[@freemax469]

Can i overclock/boost 7950x3d cpu by 140 us dollar motherboard Please Reply sir

[@SP-eo5kc]

Can someone explain where i can find the shamino boost curve, ive dug everywhere but i cant find it

[@SkatterBencher]

It is in the ROG X670E ocpak/octools, which you can find here: rog-forum.asus.com/t5/amd-600-series/x670-resource/m-p/901576 > ocpak/octools > DB Query > AMD V/F > Get Boost Curve.

[@SP-eo5kc]

@SkatterBencher thank u so much I'm upgrading from a 7900x to a 7950x3d, when looking at that page it seems there's gonna be a learning curve to tuning this thing.

[@BenchmarkingTom]

Hello, is it possible to safely and stably overclock the 7950X3D for everyday use, so that the cache cores have higher clocks, for example, 5400MHz (like you overclocked the 7800X3D), and the frequency cores 5900MHz, or would that not be feasible? I'm mainly interested in performance in games.

[@tannerwolfemortimer1190]

The answer right now is no, but also yes. He explains why no, in the video, around 12 minutes. I might be willing to elaborate for you and provide some insight.

[@BenchmarkingTom]

@@tannerwolfemortimer1190 Oh, I'd love to learn something new that could help increase productivity or just become smarter :D Generally, the motherboard I own is the X670E Steel Legend. In the time I've been getting acquainted with it, I've noticed that it's a bit poorer in options for OC'ing processors with 3D cache compared to Asus X670E boards. And thanks, I'll revisit the video from the 12th minute again.

[@tannerwolfemortimer1190]

@@BenchmarkingTom If I am to understand this correctly, there is no pushing CCD0 above 5.2GHz that its. I have the 7950X3d/MEG x670e Godlike/Corsair Platinum DDR I do the negative core optimizer provided by this kind fellow, set +200, set preference to Cache Cores and I will pretty much maintain the 5.2GHz I set my DDR manually 6200 MHz, I had it able to boot up at 6800 but lost the settings when I tried to jump to 7200 LOL, so I will need to tweak again and find those settings. My CPU temp will be around 72-74C most of the time when playing MW3, I sit around 45C-50C when Im not playing a game. I have a corsair reservoir and pump, only 1 radiator right now, I plan on getting 2, I also want to engineer some refrigerant lines from a small freezer into some tube like thing, or something, and have my pump tubes being chilled that way as well and try to get like 30 C temps on average. If you want, I will share my 6200 DDR timings, just PM or something. But they might not work for you, but they might give you an idea of where it should be. Also side note, the 7950x3d was made to run at temps of 80+ degrees from what I saw another channel state. These are built waaaayyy tougher, and were produced in less numbers, so even if you run it hot in the high 70s low 80s, it should be fine, I figure as long as you don't push 89 all the time. But its probably also best to reduce the temps if you can for even more longevity. Also if I am to understand overclocking as a whole, lower temps means easier stability, when you get higher temps I think the frequency tend to derail easier, and thats why you hear somethings are heat sensitive. If you can get your temps to near 0C then you in theory have a ridiculously easy time overclocking.

[@BenchmarkingTom]

@@tannerwolfemortimer1190 Thanks for the explanation. I've already applied all those settings like core cache preference, PBO on all cores, as well as maxed out clocks and all timings. What I was more curious about was the possibility of increasing the clock itself - I'm mainly interested in the CCD with cache memory to achieve even higher performance in games. I've also done the GPU OC, moved most processes to Frequency cores via Process Lasso, and lately, I've been testing ReviOS for performance enhancement a lot. On my channel, I post game videos, and at the end of each, there's a screenshot from Ryzen Master showing all timings. Unfortunately, in my case, the RAM at 1.4V only goes up to 6000MHz CL28 and the rest of the timings, but to reach 6200MHz at CL28, I need to increase the voltage to 1.47V, which translates very poorly to performance (about 1%), so I prefer 6000MHz. I also have a screenshot from the OC in MSI Afterburner at the end of the videos. Generally, I've also tested and can push RAM clocks up to 7200MHz, but then I need to switch the RAM mode from UCLK=MEMCLK to UCLK=MEMCLK/2, which ultimately is slower in overall performance than even 6000MHz CL28. Just switching from a pure W10/W11 system to ReviOS gave me about a 15% performance boost

[@MustafaGT]

Can you please do a 5 min video of how to setup the 7950X3D for best V cache/gaming optimization? I’m sure this is what mostly folks will be looking for.

[@Gschwerl123]

Yes Please 🙌

[@RobertSmith-lh6hg]

Watch the video again...

[@Evenaardez]

Strange I tried the ECLK tuning, but if anything my speeds go down, I cannot even go above 5Ghz on my cache cores. Any ideas?

[@mistalan]

Same here. Which board and bios version do you use?

[@Evenaardez]

@@mistalan x670e extreme and the newest bios

[@mistalan]

@@Evenaardez I bet this has something todo with the recent CPU burnouts. ASUS fixed a few things in their newest BIOS.

[@Evenaardez]

@@mistalan Hard to say tbh but this has been the worst build ever

[@timonhemker367]

Can't you manual oc the CPU with the asynchronous bclk Mode? Just set the multiplier to whatever you can set it to (for example 50) and tune the Bclk with asynchronous mode (for example 110mhz). Thats then 5500mhz allcore. Vcore 1,2v should be enough for that 🤔

[@thecolossus_5917]

Manual oc is not available on those chips (thus you cannot set the multiplier)

[@timonhemker367]

@@thecolossus_5917 but you can set the Bclk with asynchronous mode to like 140mhz. On locked Intel chips you can still set the multiplier, but not higher than the boost clock of the chip. Isn't it the same here? Even if you can only set the baseclock multiplier of 40 you still could do around 5,6ghz allcore (140mhz bclk)

[@alialbeloshi5425]

Hi intel core i9-13900ks ❤

[@egalanos]

An interesting experiment, if possible, would be restricting CCD1 to the same 1.2V and seeing how the maximum frequency compares to CCD0. I'm guessing that FMAX limit on CCD0 is due to the v-cache timing achievable at the voltage limit? (And that voltage limit set to protect against damage) Awesome channel BTW!

[@shadowgeek9239]

You can overclock Ryzen 9 7950X3D with MSI MEG X670E GODLIKE or just ROG Crosshair X670E Extreme. MSI MEG X670E GODLIKE has its VRM 24 phases.

[@Boots3962]

You can do it on all 670 boards

[@pb5109]

New CPU Drops... I immediately go to SkatterBencher and der8auer! Would it be possible to add some more game benchmarks? Like MW2 ?

[@SkatterBencher]

Is there an easy integrated benchmark for MW2 like with Tomb Raider? If yes, I'll see if I can add it somehow

[@Badura001]

​@@SkatterBencher yes there is built in benchmark

[@pb5109]

@@SkatterBencher Yes, MW2 has an ingame benchmark kzbin.info/www/bejne/enOTi2qcZsZoqq8

[@retra874]

Hello It was a very instructive post. I am collecting systems after a long break. And I have been away from most technology and I have been using the z270 intel platform for 6 years, so I have a question, my system parts will be completed in a few days. I'm waiting for 7950x3D and my motherboard is Asus x670e hero. There was an issue that stuck in my mind, my memories are 4 sticks 16-16-16-16. I bought 2 dual channels. Gskill F5-6000J3038F16XS-TZ5NR. It's expo approved and it's on the motherboard's list, but I'm wondering if 4 sticks will cause problems. I've read a lot of people who have problems with corsair brand memories. There were those who used 4 sticks in Gskill memories, but there were much less writes than corsair memories. I couldn't come to a definite conclusion. I will be glad if you share your information and opinions.

[@SkatterBencher]

I'm far from an expert on memory overclocking and tuning, so unfortunately I don't think I'm well-placed to give you an educated answer. I can recommend Buildzoid as a good source for this kind of information

[@Pbenter]

I tried the 2nd strategy using your PBO curve optimization settings. I got similar benchmark scores (37,224 in Cinebench R23) but started seeing random crashes, especially when gaming. Hopefully one of the other methods works better with my silicon.

[@SkatterBencher]

Did you copy the same curve optimizer values? If yes, please don't :). Every CPU is different so the Curve Optimizer values will be different too. The only way to finetune using Curve Optimizer is by check the stability for each core.

[@Kuba-ld9hf]

I just gone with i9 13900k and 4090 gaming oc asus ^^ im not specific fan, but i think 7950x3d should be better instead of having low 1% fps and probolems with 2 ccd's, this time intel ^^ last time got gaming notebook with ryzen :D

[@Teletha]

oc test in games plsss

[@watsup39]

Hey skatterbench, I was wondering if you could tell me your sp rating for each core on your ROG board for CC0 (vcache) die in the ai features section of the bios under extreme tweaker header. My rog board gives the same OVERALL sp rating, but id love to know the per core as i would like to further tune your method 2 towards my silicon. Thank you so much for the guide. It was a great introduction to my interest in amd cpu oc

[@SkatterBencher]

I already swapped out the 7950X3D for a 7900X3D, but if I switch back to the former I'll try to check

[@watsup39]

@@SkatterBencher thank you so much. I really appreciate the thought alone! I just wanted to know if you followed the method of most undervolt on worst cores and least undervolt on best cores as well as see how to adjust your curve to mine

[@SkatterBencher]

I don't really pay much attention to SP when it comes to final tuning of the chip. SP tells you about the P0 VID, but it doesn't tell you about the overclocking capability. I've seen "weak SP" cores overclock much better than "strong SP" cores. So, when it comes to chip-specific tuning ... I just try all of them and see where I end up.

[@Evenaardez]

I just do not understand why my bios looks different from yours even though we have the same motherboard... Like I do not have many of the options you have such as onboard devices configuration or core flex.

[@SkatterBencher]

I presume you're on the latest BIOS?

[@Evenaardez]

@@SkatterBencher Yep, for some reason, bios was not updated...I am but a simple fool.

[@SkatterBencher]

It happens to the best!

[@heikootto2865]

well i go t a shitty one (agaaain) my one isnt booting at all after changing anything...

[@peterto-xz1gu]

no. asrock steel legend x670e won't let me go past -30 at per core mode . max is at -30.

[@eugkra33]

I thought this doesn't release until Feb 28/tomorrow.

[@ogremair803]

Twitter leaks suggested that Reviews will be on the 27th, and here we are.

[@_nom_]

It came out before this for KZbinrs and such. But can't release any info until this date.

[@lolokikou5521]

-40 negative offset ? i should it was hard limited to 30.

[@SkatterBencher]

On Zen 4, negative curve optimizer goes to -300. Positive curve optimizer is still up to +30 (at least when I last checked when the chips launched)

[@lolokikou5521]

@@SkatterBencher ah ok nice :) thank you !

[@douglassantoss4917]

Could you provide a translation into Portuguese?

[@RomanOrekhov]

Thanks for the guide! I didn't understand the 2 step at 31:16 . By that time we have positive all-core CO but the first bullet says "increase per-core NEGATIVE" CO. And next bullet again increases values but of positive CO. Shouldn't we use positive at every step in ECLK process? Shouldn't it read as follows? - increase all-core positive CO until unstable - if unstable decrease per-core positive CO

[@SkatterBencher]

Hi! I looked back at it and it's indeed a bit confusing. The idea here is that in step 1 we identify the frequency limit across all-core and in step 2 we're trying to do it for each core. We assume that in step 1 we'd be too conservative with the best cores, therefore in step 2 we try to reduce the curve optimizer. This will make it boost higher. However, for cores that remain unstable, we need to further increase the curve optimizer. Hope this makes it a little more clear.