I kinda like Intel Microcode 0x12B (and AC_LL under-volting still works)

[@andytroo]

even if there was a percent or 2 of performance, a choice between "burn out your $600 cpu in a year or 2, or have a minor performance decrease" should be easy for most people ...

[@dainluke]

@@andytroo fair point

[@ApeStimplair-et9yk]

it is a thing of those who build the boards to test the best conditions - but the most doesnt intrest how high your energy bill will be just like amd

[@dainluke]

@@ApeStimplair-et9yk From an efficiency standpoint, AMD definitely wins.

[@louiienation8497]

Are you running all intel settings or are you running some kind of undervolt in bios? The temps are looking real good!

[@dainluke]

@@louiienation8497 My BIOS defaults AC_LL to 0.74, which is below spec. I personally use 0.2 which is even further below spec. I’m fortunate that my chip doesn’t require Intel spec to run properly (when the current and power limits are in place). Temperature wise, it’s definitely only as low as it is because of the 253W power limit being locked in.

[@louiienation8497]

@@dainluke do you have a video or tutorial on how to undervolt? I’m running an on my 13900k but I’m pretty sure I’m not doing it right cause I dropped it -.075 but no offset was adjusted.

[@dainluke]

@@louiienation8497 I don’t, but you’re not the first to ask. I think I’ll go ahead and make one later today. It’s probably a good idea by this point. Regarding your offset issue - I know exactly what you mean. If I may ask, which board are you using? I just want to get an indication of what your AC_LL probably is.

[@louiienation8497]

@@dainluke I’m running a Z790-E Asus board with a i9-13900k and yes I think it would be great to do a tutorial on it. Preferably on a Asus board if possible. I’d really appreciate it so much.

[@dainluke]

@@louiienation8497 I can’t guarantee this will be fine, but for the time being, setting the SVID to Typical Scenario as opposed to Intel’s Fail Safe, in conjunction with disabling CEP, should give you great load Vcore whilst maintaining good performance. If you own an SP 100 or better, Typical Scenario should run pretty easily. I think your negative offset isn’t working because undervolt protection is enabled. Keep in mind that Typical Scenario is a pretty shallow AC_LL, so you may only have 0-0.025mV of potential offset alongside the Typical Scenario SVID.

[@tlalipheko5504]

Wow! I love that you are in South Africa. I am still going bonkers working through my cpu issues with Wootware…. Not a big gamer so I am not sure how to determine if this is a Me problem or really degradation. Gigabyte is being slow on the third update. Only been out for premium boards so far. Hoping for a 0x12B fix.

[@dainluke]

@@tlalipheko5504 What sorts are problems have you been experiencing with your chip?

[@tlalipheko5504]

Windows keeps crashing mostly when I am using the Arc with the 13900kf. Not under load. It passes all the benchmarking and stress tests there are. But I will be there not moving the most or doing anything then I hear the fans going loud and boot screen appears. No BSOD. Just straight from idle windows to boot screen. I managed to peep at voltage before one of these crashes and 0.700s. Was fine for 2 years then started the bios updates when 0x129 as suggested by everyone and less than a month later…. Ignorance was such bliss.😊

[@tlalipheko5504]

Works a bit better with RTX A2000 and Radeon Pro wx7100, significantly less crashes. Radeon Rx 580 crashes a lot too but not as much as ARC A750

[@dainluke]

@@tlalipheko5504 Are you sure this isn’t an issue with the card itself perhaps? If you’re passing stress tests then it’s unlikely this is the CPU. It could be that voltage is dropping too far at idle? You could enable undervolt protection to prevent that.

[@tlalipheko5504]

@@dainlukeplease direct me to your undervolting video, if you have one. There are so many different videos out there about undervolting.

[@Nudelkind91]

If I change the LLC, is the microcode change still active? I heard that changing any settings will inactivate the new microcode and thus the protection from voltage spikes.

[@dainluke]

@@Nudelkind91 I don’t think that’s how it works haha. But I would personally just lower AC_LL.

[@toonnut1]

👍 I enjoy your videos thanks

[@Takeito_]

I just built a new pc with i7 14700k, after getting to windows I immediately downloaded latest microcode update, I have a msi z790 mag Tomahawk max wifi, I updated bios, however when running hwinfo64 I see that volts go up to 1.48 for brief moments, how can I deal with that? Can I help by undervolting?

[@dainluke]

@@Takeito_ Head to the section in “Advanced CPU” labelled MSI Lite Load. Select “Advanced” and check what the AC_LL is. You’re likely going to see 110 (1.1 mOhm). You’re going to want to either change the Lite Load Mode to reduce that value, or simply type in a less value of maybe 50 or 60 (as opposed to 110).

[@Takeito_]

I just went into that and CPU lite load control was in "normal" when I changed it to advance it indeed showed me 110 but there are two load lines "AC" and "DC" should I put 60 on both and could you explain again what will that do in terms of volts/temps/performance? Shouldn't I try with a less aggressive decreased value and monitor?

[@Takeito_]

I have 23 different modes in lite load, 16 is chosen by default (auto) maybe I can try and choose 14 or 15 and start monitoring to see how it does in terms of volts/temps?

[@dainluke]

@@Takeito_ I’m going to give you one response that’s more concise. Setting DC_LL without matching it to the corresponding motherboard VRM LLC setting (you need to know the VRM values off hand) will compromise accuracy of the package power sensor. You don’t have to do manual AC_LL values, but I’d definitely drop down to Mode 10 at the bear minimum. I think you’re going to be fine as low as Mode 5. Mode 10 equates to 0.6 mOhm of AC_LL. 0.6 is still a substantial amount of voltage. Average quality chips operate totally fine in the 0.2-0.4 mOhm range, but I’d say go ahead and testing Mode 10 and reduce from there to see how low you can get your voltages.

[@Takeito_]

Thanks! I will change to mode 10 and test with hWinfo software monitoring.

[@yuan.pingchen3056]

i'm not familiar with y-chruncher, is this microcode really fix the problem of 13/14 gen CPU?

[@dainluke]

@@yuan.pingchen3056 It’s a tough question to answer. I would like to believe it is, but the use case that these recent microcode patches have addressed are incredibly niche and hard to test. Buildzoid made some good videos demonstrating 14900K single core voltage behaviour. In that video you can clearly see his chip using far too much operating voltage when he would run single core R15.

[@yuan.pingchen3056]

@@dainluke I still have a msi z790 tomahawk max wifi motherboard, it's unused, no body want buy this one, so maybe I can only sell it as parts, for example: NVME heatsink , qualcomm wifi 7 card etc... what a sad story....

[@dainluke]

@@yuan.pingchen3056 I’m sure you can find a buyer. Just give it time.

[@ApeStimplair-et9yk]

only when your system is CSM