All Power Supply Cable Types EXPLAINED

Power supply cables can be confusing for beginners. Let's explain what each does and where each goes!
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[@GregSalazar]

Hey, everyone! I know much of what is said in this video isn't news to many of you - but as the PC gaming industry expands, new builders will flock to videos like these. I really wish I had a guide like this one when building my first PC. Wiring things up was confusing! But much like anything else, practice makes (almost) perfect. Thanks for watching!

[@alamasnackbar6762]

u should do a video on fans mounting and connections 3pin vs 4 pin and how to do fan curves. and what to connect to CHA_FAN and CPU_FAN, CPU_OPT etc maybe even positive vs negative pressure too

[@fnige]

thank u for your sacrifice

[@KTHKUHNKK]

We're all astonished by your knowledge. But for the newbie What you're saying is overkill. The wattages the power consumption newbies don't care they just want to know where to put the cables at.

[@KTHKUHNKK]

All of your fans wish you could talk just a little bit faster. Lol

[@ibramistafanous1231]

Greg, silly question if you plugged the PCIE cable into where a cpu cable would be, what would happen?

[@cookie7993]

I took apart my computer to clean it the other day, and when putting all my components back together, it wouldn’t turn on. After 10 minutes of confusion, the 24pin wasn’t connected....

[@trestianb]

I've been building computers for half my life and I Still forget to connect the 4+4 from time to time and freak out for a second why it won't boot.

[@fjoddmaster9375]

Im currently having the exakt same problem. But the 24pin is connected. I just know jack shit about computers

[@davidbiddle1525]

@@fjoddmaster9375 did you figure it out

[@plastifiedmetal5682]

Lol

[@nogrammer]

@@fjoddmaster9375 very few things cause PCs not to turn on. ram not in properly, cpu not in properly, you didn't flip the power switch on the power supply, you didn't hook up the power button on your case to the motherboard right or your graphics card is short circuted, aka dead. These things will prevent your PC turning on. All easy to find out.

[@GTArajgaming]

I'm surprised you haven't called these types of videos " learning with Greg" it's got a nice ring to it This is genuinely helpful

[@DoctorX17]

I've been working with PSUs since before they had any of these connectors... I just like hearing him talk XD and seeing if Pepsi shows up

[@Pikachu-vj5jr]

@@DoctorX17 i wish i knew you irl this shit is so stressful

[@davetechme]

Great info. I would just add that modular power supply cables should be kept together with their respective power supply. Cables generally are not compatible between manufacturers even if they slot into each other, so avoid taking the shortcut of changing the power supply only while still using the same cables should you need to change. Custom cables are manufacturer specific then as well.

[@Scootermagoo]

Thank you Mr Saladbar, your discord people will never forget.

[@KTHKUHNKK]

I like that Mr salad bar that's a good one. Lol For a newbie computer builder Mr salad bar is going Overkill. Newbies don't care about the wattage the volts the wire gauge. They just want to know where do I put these wires at.

[@fredrock9518]

@@KTHKUHNKK it does help to know though, I ran into a voltage issue with one of my Power supplies, good to know your voltage when you need to.

[@Just_Poncho]

@@KTHKUHNKK I mean it’s in the title, he is also explaining each cable if you only need to see where to plug them in go watch a “All power supply cable types” not “All power supply cable types EXPLAINED”

[@Scootermagoo]

@@cjrisener241 Glad you guys liked the comment, it's from the tech yes city discord when the mods and admins and a large portion of the user base changed there names or were changed to Greg Saladbar. It was quite funny.

[@mattpenguin3030]

Additional info (you'll almost certainly never run into these cases) 3:00 Most motherboards will run just fine without the extra 4 pins. If your power supply only has a 20 pin ATX connector, it should still run fine, however, don't try super intense overclocking or installing to many PCIe cards as the motherboard has to handle up to 75W of power per PCIe card. 4:40 Some low end motherboards may have only a 4 pin EPS connector. If your power supply only comes with an 8 pin that is not splittable, you can still plug in the connector as is with the extra 4 pins hanging off the side. As long as your orientation is correct (latch matching the notch), then it won't matter which side is hanging off the side. 5:55 especially beware of the single 6 pin to dual 8 pin adapter. You don't want your wires melting. If you desperately need to use an adapter, use them to convert to either a SINGLE PCIe 6 pin or a SINGLE EPS 4 pin at the max with a LOW POWER CPU . Molex is rated for 132W on the 12V, while PCIe 6 pin is 75W, and EPS 4 pin is 155W. No overclocking or possibly turbo boosting on these adapters. On the topic of adapters. Technically, if you have an extra 8 pin EPS connector, you can re-pin it to be a PCIE 6 pin, or 8 pin with some soldering as they are both just 12V and grounds (I've done this once), but seriously don't do this unless you know what you're doing. 7:50 The quality of molex connectors has reduced overtime as manufacturers have become cheaper with making them. Be careful not to plug them in upside-down with especially low quality molex connectors (yes they are shaped unsymmetrically, but the plastic can be that low quality on some parts) Some power supplies may also come with a small 4 pin connector. This is used for floppy drives and is a mostly dead connector at this point. You can basically ignore it.

[@dycedargselderbrother5353]

The declining quality of Molex connectors has always been a problem; the actual Molex company did (and does) make them in high quality but the clones cut costs. For example, the power supply connectors for the old AT boards were supposed to be keyed but they got less so over time as PC clones progressively cut costs. At first you could connect them incorrectly but it would require force and it would look wrong as the keys bulged out of the socket. By the time ATX came out, new builders had to rely on the community shouting "BLACK TO BLACK!!!!" at them to not connect them backwards lest they melt the PC since there really weren't meaningful hints by then. Early on the four pin connector everyone calls "Molex" and the more compact version most commonly used with 3.5" floppy drives had a death grip but later clone manufactures were loose enough to fall out on their own. Also, once upon a time you could yank them out by the cables, but try that these days and you'll likely rip the wires out of the socket with hardly any force, especially with adapters, e.g. for fans or hard drives.

[@dycedargselderbrother5353]

@Jovica Jevtic Yeah. The +2 is usually detached but if it isn't it's fine to hang off the side.

[@fubsthefish8320]

So I can just use another 8pin to fill the extra 4pin on my MB? Mine has an 8pin and 4pin in the top left.

[@dycedargselderbrother5353]

@@fubsthefish8320 If it's an 8-pin CPU cable, yes. The extra 4 pins can just hang off the side if the plug doesn't separate. That said you'd need the CPU to pull in the 250-300 watt range or higher in order for the extra connector to be relevant.

[@fubsthefish8320]

@@dycedargselderbrother5353 I do understand I don't need it. But I've seen that some MBs don't boot without it and I wanted to make sure just using 4 pins of the other 8 pin cpu cable would work if required. Thanks brother.

[@Tyler-bz6zr]

I really enjoy the newer videos you're putting up that cover more of the basics. As someone who is going to be building their 2nd build (1st was built around 4 years ago), these videos really help me back up to speed!

[@eannealino4192]

Thank you so much. I literally had a breakdown over these cables and this video saved me

[@AdrianReddix]

Think more videos like this are needed. Some people who want to get started but might be timid about asking more experienced people questions. Good video.

[@GregSalazar]

Thanks, Adrian!

[@no1badufan725]

THANK YOU (three years later) FOR THIS CABLE BREAKDOWN!! Not new to computers but building my first rig and was trying to determine to go with a fully modular, semi modular, or a dedicated proprietary brick PSU. Decided to go semi modular because I can do more with it than the dedicated brick PSU. A fully modular PSU gives you total cable connection control but for me was more than what I am after. Thanks again!

[@OldmanYolo]

Upgrading my rig and saw this 8pin and 4pin CPU plugs. I scratched my head cause I haven’t seen this before but it has been 5-6 years since I’ve built my PC. You answered my question and saved me from buying a new power supply. Cheers 🥂

[@systembinarygaming]

Thanks, sir. My son and I weren't building a gaming machine, merely trying to examine the power supply of an old PC, but you told us so much of what we needed to know.

[@Slinder14]

I needed this like 3 months ago.... glad it’s here now for future builders

[@georgegates526]

Molex used to be the state of the art in electronics from about the 1940's up to 1980 - at least. They were electrically/physically very rugged, expensive, and almost never the cause of a bad connection. The only thing that got rid of them was the high tech in designing plugging "keys". Now we have so many keyed choices that can endlessly prevent a wrong hookup, no matter how many cables you have.

[@TheOriginalSharkWithALaser]

It's an elementary concept, but I can't tell you how much I would have appreciated having a simple short video like this when assembling my first PC 6 years ago. "Line up the plugs" isn't always useful advice when power supply pins all look very similar to the untrained eye.

[@Eric1935]

Greg, thank you so much for putting out this video and explaining the power connections for a power supply in a very thorough yet simplified manner. I appreciate you man 🙏

[@MarcAuraCrylrex]

Very nice video. I've been looking through a lot of PSU vids and this one is the only one that's quality, tasteful, interesting, not SUPER LONG, and covers everything that needs to be covered concisely. Thank you

[@Deoxys_da2]

Its always that tentacle monster hissing at me

[@msds2930]

This is actually the video I'm looking for as first time PC builder. Brief explanation of what the cables do and where to connect them. Addressing the paranoia of connecting incorrect lines resulting to parts failure. Thanks brother

[@84Actionjack]

I've been doing this for 30 years yet I still learned something. Great video!

[@Kevinb1821]

I did my first pc build last October. The only wires that confused me were the pci and cpu power cables. I could tell which was which until i saw cpu breaks into 4 4 and pci breaks 6 2.

[@PapurrPlays]

This is truly helpful. Thank you! 😊

[@shaneeslick]

G'day Greg, It is great you are doing content with proper information to include beginner builders into the Hobby & give them the confidence to build themselves, as someone who has been building PC since the '90s seeing a good 'How To...' or 'Explaining...' video to help newcomers is always welcomed, especially considering how many 'Bad Cough The Verge Cough' ones get uploaded

[@luisazakura2648]

I know is too late, your video is over a year old, but you safe my computer. Thank you so much.

[@MarcoGPUtuber]

You missed a golden opportunity to say 'Thanks for powering on with us.'

[@molw9954]

I would cringe

[@xility3853]

Thats cringe

[@SixesSeven]

Cringe

[@venividivici4253]

Cringe

[@MarcoGPUtuber]

@@venividivici4253 Being late to the party by three weeks is pretty cringe.

[@cyjoker333]

Damn Greg. I know an older video, but every time I have a question it never fails to search your videos on here. Thank you!

[@ahmedfakher5658]

"thanks for learning with me" - wow that's the first time I've heard that, and I like it, thanks for the video!

[@bethilyssabecker1709]

SUPER helpful as my 14 year old and I build their first computer (me knowing absolutely nothing starting out!) Thanks!!

[@LittleBallOfPurr]

Third time's the charm. This was really helpful to me as you focused on where the cables should be going in, others had covered it but you made it crystal clear. I now feel confident enough to try swapping out my PSU, thank-you!

[@Cedrikkkk]

How did it worked out? I'm about to replace my PSU as my old one has a fan bearing failure and I'm quite nervous as I've never installed a PSU by myself.

[@THEpicND]

Great video. As a new builder I would have loved this! Had to learn the slow and personal way, since most “build guides” don’t really go into wiring too much

[@hometheater-pc]

Just what I was looking for, someone to explain the weird 8 pin & extra 4 pin ATX1 & ATX2 CPU PSU connectors. Thanks very much for making this video.

[@ItsRainingLemons]

I already know most of this, but always nice to learn a thing or two!

[@DoctorX17]

I already knew all of this, I just like hearing what he has to say anyway XD

[@agaminghippie]

Thank you so much for this video, idk why but i was actually shaking i was so nervous building my pc, and you made the psu part so much easier then i was making it out to be. Id still be on a 500 watt 1060 build if it werent for this vid. Now im on a 30 series build and LOVING it. Much love brother.

[@ElTeeger]

My first time building a pc was a bit nerve racking because of the pci e and cpu cables looking similar but the way they split gives you an idea which is which. Very helpful video

[@williammurdock3028]

I had to smile, and think what a "Verge" video on this topic would have been like.

[@eyb0ss]

Probably recommend you to buy a no-name PSU that will blow your entire rig up

[@pewnice92]

@@eyb0ss na mixing up the pci-e and cpu one

[@nickblack6866]

Looking to build my first pc this summer if parts are in stock. These videos are incredibly helpful, thanks so much !

[@CharlotteKanStudio]

Thanks! Super helpful. I'm in the midst of building my first PC and I was so confused with the GPU cables having extra connections daisy-chained to them, it all makes much more sense now.

[@itisfreak]

🥵🥵🥵

[@Goatwin]

You are a menace ​@@itisfreak

[@boblekewl]

This was great Greg. I have now built a number of systems & made a massive blunder the other day by not connecting the modular 24 pin MOBO cable correctly into my PSU & thinking the PSU was dead. Long story short, $400 AUD later mind you, I discovered it was not dead & did not need to replace it as I connected the MOBO cable the wrong way around (PSU side in the MOBO & the MOBO into the PSU). Can I suggest a video showing how to connect modular cables to a PSU would be useful, as they are becoming more cost effective & more people are using them to avoid clutter in their cases. Otherwise, keep up the great work you do 🙂

[@js-gc2hk]

This morning i ordered some of the Premium sleeved cables for my corsair RM 850 and you make a video the same day about PSU cables :o

[@NathyBoyo]

Currently watching this before connecting my PSU, I have more of an idea of what to do. Thank you!

[@IBKNW]

You are the best of all trying to explain Power supply...And you speak very very well. )no Ugh between each word)

[@skuxxskits]

After hours of having trouble and searching the web this is the easiest and most helpful by far! Thank you for this video it made my life a whole lot easier 😊

[@S85B50Engine]

6:00 I actually had a friend do that mistake on his first build. He was asking me why his PC wasn't POSTing until he told me that one of the cables was hard to connect. It was only then when I realized where he messed up.

[@dalfry]

Again, GREAT timing with this video. Forwarded to some friends who are currently building their first PC ever. Good video!

[@61spindrift]

Having issues with my build posting. My build, not to go into specifics but has 10 monitors attached to it. Believe I spent around $4-5k on it, excluding monitors. Anyways I need pinouts and needed a video with only that. No jokes, no entertainment value...just pinouts. And that is what you provided. Man I hate subscribing to channels I will never need again but, that is what you gave me here, so thank you and here is my subscribe.

[@bigdogblackie]

If you pickup (or remember) even one tip or shortcut watching this content, that's great!

[@david120williams]

"Notched and keyed one way" ........ such a simple concept when said that way. And, alas!! Thank you.

[@twsbibanghorn7343]

Thanks, only had old machines so great to get prepared for the 21st century on this weekend's build.

[@dahkteromar749]

6:06 “Indetify before you shove something where it doesn’t belong” Best general advice in life 😃

[@XDslic]

6:27 there’s always lube

[@x999philly]

I appreciate you. I hope you know that you helped so many beginners more than you would know:)

[@connorwilson4357]

This got uploaded on the day of me building (well, struggling to build) my first pc. Thank you sir, you are a gent and a scholar.

[@nocdful]

Iv seen alot of tech tubers and forums online saying NOT to daisy chain your gpu, apparently it causes power instability

[@DoctorX17]

It depends on the card, really. Have something with 2x 6 pin, like a 1060/2060? Might be fine. Something like a 3090 with 3x 6+2? You very much do not want to Daisy chain, especially for overclocking. I would say it's a good rule of thumb, but not always an issue

[@DoctorX17]

Example -- I have a machine with a 2070 and 1070 Ti, both on daisy chain PCIe from a 1200w PSU, and they're fine. Another system with a 980 Ti, 970, and 760, all daisy chain, fine. Built a rig for a friend with an RTX Titan, card would not output video with Daisy chain connections, but was fine on straight ones

[@cpbgaming7983]

Very helpful as I'm starting out fresh to the PC world so a basic understanding of these was needed, Thank you!!

[@Mysticzephyra]

This was the only video that helped me realize that my computer wasn’t botting because i wasn’t using the cpu cable for the motherboard

[@brucepayne2569]

Damn good pointing out the PCIe 2* 6+2 double headed cable, it may be really easy for long term builders, but as a beginner making their very 1st build, YES I put tried putting the PCIe 6+2 cable into the Power Supply and wondering why the other end would not fit into the GFX card. We live, ( watch another "how to fit a modular PSU" video, and learn that we don't do that again ).

[@PCTechHustle]

Great informative video as always Greg!

[@boiiifuaintcare8629]

Yayy finally a youtube notification that came fast enough

[@GregSalazar]

Aye!

[@hughw.]

I agree.

[@boiiifuaintcare8629]

@@GregSalazar omg u actually reploedd

[@Alfadrottning86]

Very nice to learn the basics indeed. I have build (i have made my friend build, but i watched!) computers several times, but i never knew about the 8 pin and 16 pin CPU thing .. and that you can attach 8 pins to a 16 pin CPU motherboard and it works. Had we known that .. we would not have bought a new PSU recently because the old one only had a single (split) 8 pin connector .. and now i had to buy a fairly expensive new PSU with 2x 8 pins (for nothing as it seems) ... ... the joys of 2020 building a home office

[@KeytarArgonian]

Just a heads up: some modular PSU’s will have a CPU cable that has different ends. One that is the clear 4+4 in an 8pin (it will have 2 clips) and the other end sometimes looks like a PCI-E that fits into the PSU itself, but the way the pins are on the ‘PCI-E end’ are just that way because manufacturers are lazy and it will still technically fit, and has 1 smaller clip that fits the psu plug snug.

[@justin-kurtgurel6829]

I have that situation and I'm stuck , my motherboard has 2 receiving ends that are 8 pin each and the power cable labeled CPU can plug into the PSU but on the motherboard end 2 of the 8 pin receivers can only take a 4 pin on each one(the shapes match) so I have 2 cables coming from the PSU to the motherboard but only 4 pins plugged into each one of the 8 pins leaving the other 4 pins dangled because the shapes don't correspond. I'm afraid Corsair gave the wrong cables

[@samueljordan5601]

Once again you upload a video the day I needed it lol. I swapped graphics cards and power supply’s from mine and my cousins system and their motherboard had a 4+8 cpu power connector but the power supply only had an 8 pin so I wasn’t sure if I could use the power supply but now I know it’s fine. Thanks!

[@al-dorifto1631]

Mate soon as you said jam something where it doesn't belong. I cracked up laughing but I got a seedy mind lol

[@Blaze-xv8oq]

thanks i was wondering if i could just use my old psu that only has a four pin while i waited for my new one to arrive. you earned a subscriber and keep up the good work!

[@nadirk]

Greg you should do a video on how the jhack m2426 works. it's for ITX builds and very popular. It converts the 24pin to 6pin massively reducing the amount of cables. I believe it uses only 12V from PSU and generates the 5V and 3V rails locally using buck converters.

[@GregSalazar]

That sounds... interesting! I'll check it out!

[@TheJarJarKinks]

DIdn't NFC recently do a video (about a month ago?) on that? Well, the more exposure the better.

[@ThaMentalGod2003]

thanks for ur effort 😎helped a lot to clarify things for me! peace, stay chillin

[@MrZanderYT]

THANK YOU SO MUCH I have been confused for a long time

[@rodneysherrill1248]

Literally installing a new PSU and tower cooler while watching this. Nice timing!

[@vikingsofvintageaudio7470]

Thanks man, you gave me less anxiety of powering on my self built computer for the first time!

[@koalaunknown]

“Unless you’re into some heavy duty overclocking, just the 8-pin will suffice” Intel 12th gen: About that..

[@daniDEE_tv]

went with EVGA 500w for my first build - great price & thanks to this video , watching it again now with PSU in hands ready to connect

[@Leasurman]

This was exactly the info I needed, thank you!

[@dennisomar2584]

My niggah. You helped me so much. Dog I started tearing up when watching some of your video. It was a whole ass relief for me. Specially since I’m switching to a new tower. This definitely helped. Much love, stay safe homie

[@trashgamedev5730]

You swore. I'm cancelling you on twitter you vile person. 🤡🤬

[@jublywubly]

Thanks so much for making this brilliant video! Your advice about 4 pin vs 8 pin CPU power is invaluable. Checking the motherboard I'm planing on buying (a Gigabyte Z790 UD), it has to eight pin ATX plugs. That wasn't expected. Now I have to make sure my proposed power supply will work with it.

[@mikey510]

I just upgraded my MoBo to one that gives the option for 8+8 and i knew that i could just run a single 8pin, but i wanted to clarify that i couldn't use a Pcie 8pin. and as i predicted i cannot, thanks for the clarification Greg. you make information so easily attainable in videos like this.

[@BrownStain_Silver]

My 10 year old gaming PC (a friend helped me build it) has never been cleaned and is full of dust. I found your channel looking into how to properly clean a PC and upgrade/replace a few parts. It's got 2 dead (pink) cooling fans, dead LED red lights, and needs good cable management from the semi-modular PSU. I'm replacing the cooling fans, ATX case (I bought it on deep discount many years ago and the pictures showed red fans and a red button on the front of the case which turned out to be 100% pink when i received it), and upgrading my EVGA NVIDIA GTX570 graphics card to a EVGA NVIDIA 1650 Super SC Ultra. The old GTX570 uses 2x 6pin PCIE connectors and the new 1650 Super uses 1x 6pin PCIE connector (according to techpowerup specs) which had me confused. This video answered whether I could re-use my current 2x 6pin cable and leave the extra 6pin disconnected. Thanks for the content!

[@Absolut1200sCali]

Great video which gives a clear presentation on plenty of cables, very appreciated.

[@brewmeup5827]

Omg why didn't I watch this two hours ago, thank you guru sama

[@RicoValentino1558]

Actually removing the 24pin is the biggest pain :D

[@truchronoreaver]

Very helpful while I was building my own rig. Thank you for the advice!

[@fightedmealready2692]

My Job is building computers and I still need this video

[@VulcanJEDI]

Thanks! Haven't done this in 10+ years and didn't know about the 4 or 8 pin

[@journeyjunkies88]

You are right, when i assembled my first PC, i just got confused what to that. But thankfully shop owner helped me with that.

[@ryz.4827]

Thanks Greg now I finally understand everything about the cables

[@just_matt3937]

Thanks man! This was really helpful. I plan to build my first PC after my upcoming college semester and the only thing left I was uncertain about was what cables serve what function. Now I feel like a PC pro without even had building one lol.

[@sebastianp994]

did you build it yet

[@just_matt3937]

@@sebastianp994 yup and I love it. Here are the specs: Case: Phanteks P360A CPU: Intel i5 11600K GPU: GTX 1070 (shortage 😭) Mobo: ASUS ROG STRIX B560 A-GAMING WIFI RAM: XPG D50 PSU: NZXT 850W (forget the name lol) I plan to upgrade my GPU when the next generation of GPUs are out, but this does what I need it to do and I can play some games at 1440P.

[@sebastianp994]

@@just_matt3937 Damn lol nice bro I'm glad you got to build it. And I feel you about that shortage lmao

[@sebastianp994]

@@just_matt3937 Nice set up nonetheless!

[@just_matt3937]

@@sebastianp994 appreciate it man. It'd glad to be back on PC. I wanted to build one ever since I was in middle school and I couldn't run Battlefront 2015 on my Dad's old PC. Now that I'm in college and working I was finally able to make my dream happen. I'm also a Comp Sci major, so my tech enthusiasm comes natural.

[@TheAnalystradioprogram]

Yo, this guys smashes that corporate product slinger Linus all day.

[@SmokyPizza6853]

I guess Spiderman got tired of fighting crime so he got a side hustle in PC build tutorials

[@rezwananis7999]

This video is really really good for entry level pc guys like me. Thank you Greg.

[@unheard5982]

5:24 - 5:46 this explanation, that i've probally looked for answer for about several years lul.

[@mftmg1315]

Wow. Thx

[@narumango22]

Literally the only video that helped me. Thanks

[@fullmetalblacksmith7933]

Can you use a 6 pin pci-e connector in a 8 pin slot?

[@obsidianz2943]

Thanks. Now I know where to cable manage and where they go before my motherboard arrives in the mail

[@blahorgaslisk7763]

When creating the PCI-e power connector they really didn't think things through. The problem was they started out with the 6-pin version and didn't consider that future graphics cards could need more power than what that could supply. What they should have done was to just use the same 4-pin connector initially used by motherboards and when that wasn't enough go to the EPS power connector, which just happens to be what you get when adding another 4-pin connector to the first one like in the split connector shown in the video. This way we would have had one less connector type to consider. The problem is that while as stated in the video it shouldn't be possible to connect the 8-pin EPS connector to a graphics card or the 8-pin PCI-e connector to the motherboard it's actually often far to easy to do. The shape of the pins should make this impossible but lax tolerances and soft plastic usually makes it easy to overcome. Now the problem here is that though both connectors carry +12V they are kind of inverted. The EPS-12V connector have +12V on pins 5 through 8 and ground on pins 1 through 4. The PCI-e 8 pin connector on the other hand has +12V on pins 1, 2 and 3 and ground on pins 4 through 8. So plugging the wrong connector to the wrong socket can have bad results. Also note that the PCI-e 8pin connector doesn't have more power pins but only adds two ground pins. Now the only reason I can think of doing this is that the original spec for the 6-pin connector had pin 5 assigned to Sense. In the 8-pin connector pin 6 is Sense A and pin 4 Sense B. These are used on the graphics card to detect that the PCI-e power cables are connected. As far as the PSU is concerned they are just another ground connection. There is reason they couldn't have used the same pin out as the EPS-12V connector. In my opinion they screwed this up by creating an unnecessary standard.

[@derek4567]

I LOVE THIS VIDEO. Finally someone talk about this

[@motivationalmarketer8845]

Looking to forward to my first PC build, this is very helpful. Thanks

[@ad8keyz]

Wish I had this video in 2017 😂 thanks again Greg!

[@GregSalazar]

Thanks for the support!

[@MasterMafiaDK]

Thank you so freaking much! going elementary is essential for learning the bigger concepts!

[@abdullakwayed9940]

the image you showed at 3:20 is for the GPU connector but you was talking about the CPU , the CPU connector has 4x Ground and 4x +12V

[@mindrover777]

That will depend on the psu and motherboard

[@mrshodz]

Greate video. Came in use when figuring out what connectors do what!

[@Nick.T.Alo3.G-Car]

Many thanks for this video, it "put things in their proper place" - appreciated

[@stevenlawrenceferj]

Thank you for this. Build coming up shortly

[@alexandrugrecov8964]

Very useful, I will need these tomorrow when I will instal a new Corsair power supply.