This was a great video. I learned so much. I have been building PC's for ten years and never thought much about PSU's.
@katleencuchapin3037 Says:
Can someone help me here please 🙏🙏 I'm a grade 11 student and we have assignment about computer parts and I can't find the answer in Google! Here's my assignment
Name of PSU
1. 20+4 Pin 4pin
2. 20+4 Pin 4Pin Molex Sata
3. 20+4 Pin 4Pin 6Pin Molex SatA
Please can someone answer me🙏🙏
@BenKlassen1 Says:
Great!
@l0gic23 Says:
Wonders if swapping PSU for old desktops will help homelab cost savings
@thomasmcguire2227 Says:
Thanks! I finally got around to replacing my old 300W PSU with a 550W but had to use an adapter since the 550W only had a 24 pin power connector.
@rjensen4896 Says:
This is great information! I've been trying to learn about building a pc for the last couple of months and nobody talks about what power supply you should be running based on the usage. This was what I was mostly after, but also knowing that the sustained and peak supply rating is different but labeled the same across different manufacturers is good to know as well.
@Castropc Says:
Another interesting topic explained. Not 100% connected to this video but is it better to turn off your PC or sleep or hibernate it when you are not going to be using it for a while?
@clair9167 Says:
Such a good training! So well explained.
@harryniedecken5321 Says:
Thank you for the video. I am rebuilding up an atx desktop which will be used off grid. Power will come from solar plus a 48 VDC nominal battery pack. Does anyone make an atx power supply that can run directly from the battery pack dc ? Thank you.
@todortodorov8651 Says:
Spectacular video. I based one whole lecture on PSUs for the highschool I am teaching at, based on your video. Bowing down at your skill to explain and organize, we know how much time it took to prepare so much information.
@j7ndominica051 Says:
Why do PSUs now boast single rail 12V with a "DC-to-DC" converter? You can see on the specs sheet that the PSU promises its full wattage at 12V. What new technology enables it as a better design? Aren't voltage regulators kind of bad and dissipate a lot of heat in battery operated devices? Seems like they snuck the 12V Only into ATX. When 12VO came out, there were rumors that this power supply would be the only one in production thus rendering old PCs obsolete if their PSU could not be replaced.
They also have removed 3.3V from the SATA connector, which was almost never used. The 8 pin CPU connector fits into a 4 pin socket if there are no tall components nearby.
500W seems like the goldilocks choice, offered at similar price than lower wattages. Back in the P4 days I bought a cheap power supply that claimed to be silent, and indeed its fan hardly turned, the PSU was noticeably warm to the touch and soon burned out.
@Blazer433 Says:
I love your channel, so informative
@sativagirl1885 Says:
Q: Why not design a power supply that's the same footprint of a raspberry pi SBC. and eliminate messy cables that Mister Scissors dreams about?
@ph11p3540 Says:
That last 2022 PSU standard and Intel 13ths generation CPU socket motherboard standard really was a surprise to me. My 20 year old 850w semi modular power supply lacks the main connectors for the secondary paired 8 pin power connectors to the mobo. Time to buy a new 1050 watt fully modular power supply. Overpowered power supplies are harmless while the incorrect connectors and power supplies running past 80% power needs are dangerous to a PC. 4 and 6 pin secondary mobo power connectors are dead
@Bobcat665 Says:
Thank you for the history lesson! It was interesting to learn about when and what changes were made to the industry standard over time.
@cafeplazay Says:
😀
@Alpha-ms9nj Says:
I recently had a no boot no beep issue with an old HP Z230. Thought it was the PSU. I learned that HP Z workstation PSU's are proprietary and are 11V standby and 18 pin motherboard connection. Thankfully after further diagnosis I changed the CMOS, got it to beep 5 times that pointed to the CPU which I cleaned and it booted. Always great videos on this channel that is a source of informative information, thank you.
@kueifengtung2693 Says:
I recently bought and built a desktop that uses a 4070 with 80plus gold power supply. The shop recommended me against getting the platinum because from his experience with clients, they break at a much higher rate. It is true that the more complex something is, the more parts there are to break. But in this case, Is there any truth to plats being less robust than gold?
@Gato303co Says:
Nice illustrative video. I have been seeing the hatred for the Molex connectors, I used them in the past, and even being kinda problematic to handle and connect properly, I still don't see the problem with them
@Mruczek123 Says:
there is a great lack of translation of the lecture into Polish
@miteshvallabh2788 Says:
Thanks for all the videos and all the useful content.
Can we get something on KVMs? What to look out for, how to best use a KVM? Also can we get something about having a PC in 1 room but being able to access it in another room as well, similar ro Linus' home setup (from LTT), but maybe a bit of a cheaper solution using a HDMI extender or something similar?
What about a solution for having 2PCs sharing a monitor, keyboard and mouse in room 1, so they could use a KVM, but them having one or both of those PCs accessible in other rooms on a totally different monitor, keyboard and mouse?
@MitchellJBridges Says:
This video was quite helpful for me when I build PCs. I had very little knowledge on PSU's so I thank you for this great insight. Keep up the great work.
@markfalina9160 Says:
Chris, my psu has a few ports labeled SATA/PATA. Could you please tell me what PATA is?
@MrVidification Says:
I have a new pc. I shut it down normally via windows. The psu switch at the back of the case I also turn off (to prevent draining power from the wall). At a later date, I then switch the pc back on at the front. I have forgotten that the psu switch is off at the back, so the system powers on and off for half a second. The supply has obviously retained power from previous use. Do you think that is an issue, and there could be a chance of of ssd corruption or motherboard component problems? After looking around, I've noticed some pc building guides do insist to drain the power in a similar fashion. I do not recall my previous pc ever switch on and off for a split second. The supply is a rog 850W
@oSpecialx Says:
thank you for the detailed information
@ethimself5064 Says:
Note: I have an 8 year old Levono ThinkCenter M92 - i3 4 core.3400. U gad this for at least 2 years and always thought it saw sooo quite. I went online and downloaded the manual and specs to find that it has no fans what so ever. No GPU I soul mention. It took less than a second to realize why it was so quiet
@pandacongolais Says:
Well done, a lot of things nicely put !
Agreeing with the conclusion, except that a bad PSU can also affect the behavior in the short term !
In 2000, I build a system around an AMD T-bird 1.4, 3 x 512 MB RAM, in Antec case provided with its 400 W PSU, a lot at the time from a known brand.
Soon enough, I got random crashes. I tested all the components I could, removing or swapping them. A lot of memtest86 running at night. At first, my conclusion was : I can use 2 x 512 MB, but not 3 x. Yes, all memory sticks were OK, but only when used by pair, not all three at the same time. What ? OK ...
Few years later, build another system, with completely different components, but in the same case with the same PSU: again, immediately, problems, crashes.
Lesson learned, since then, I buy only high quality PSU. Unfortunately, the brand is not enough to be sure to make the right choice. Check on the Gigabyte-gate on Gamers Nexus channel for exemple.
Note that sometimes, even with good quality PSU, you can encounter problems. Exemple: I had to replace a 750 W PSU, supposed to be enough for an nVidia 3090 FE. But the "beast" is putting stress on the PSU at level much higher than advertised. Now, it's running well with a 1200 W PSU ...
@RickySupriyadi Says:
it's been a headache for me wanting to replace power supply for old lenovo d30 workstation...
@bigfishoutofwater3135 Says:
Any interest in a follow-up covering picoPSUs or ways to power small devices with things like Power Delivery (and GaN chargers) or Power Over Ethernet?
@paulm5935 Says:
Nice thorough coverage of the necessary details. A small investment of around $10 has proven it's worth time & time again, and that's a PSU tester. When a PSYU goes bad, it's not necessarily all at once. Being able to test for everything and also each individual output is very handy.
Paul M., Atlanta, GA
@petercarter9034 Says:
Very interesting, thank you !
@zodiacfml Says:
Reminds me how PSUs have not changed for decades. Intel is right to move the PC industry to 12-volt system where the PSU does not need to put any other voltage other than 12 volts. This will also allow the PC community to easily reuse old server power supplies that are incredibly efficient and small, cheap as used.
@KTHKUHNKK Says:
❤. Nicely explained as always
@wolfmobile3693 Says:
I know people hate molex but molex plugs were sturdy, unlike those flimsy Sata connectors where the male end on devices has been known to snap off.
@kacpe8766 Says:
You forgot about -12 and -5
@builder396 Says:
I should also mention that PSUs can definitely output more than they are designed for if you really force it.
Back in the day I got myself an Nvidia GTX 570, and being on the Fermi 2 architecture it guzzled power and ran hot. The TDP was 219 watts and the packaging recommended at minimum a 550W PSU. I had a 500W one, and already had more than the minimum of drives, and decent 4-core Athlon for the time, definitely not a power-efficient system.
It still ran for months on end before, after about a year, I started to have issues. When playing demanding games the PC would shut off after some time, and that time became less each time. I quickly figured that I probably blew a capacitor, and when trying to deliver too much power it would overheat and eventually power would drop off below what the PC needed.
Until I could afford a new PSU I plugged in my old graphics card, a 75W 9800 GT eco, which soldiered on and even, albeit barely, ran modern titles like GTA V, which was new at the time. Tough little card, but my PSU could still power it for a few months longer before it started to have issues there, too.
Morale of the story: DONT DO IT!
@carabara3947 Says:
Yes Educational Video Been Health Retired So Like To Buy Old PCs And Unchoke Them Just Just To Give Me That Little Self Achievement When It Still Boots Up Looking In New Condition Will Donate Them To A Local Charity As They Over Come Me LOL
@lawrenceallwright7041 Says:
Whoever thought that 600W through a little 6 pin internal connector was a good idea??? As you said, that's the equivalent of a small electric fire.
So glad I now know the difference between a top mounted and bottom mounted PSU. Mine's top mounted, but the case originally shipped with a Windows 7 system, so it's knocking on a bit!
@Girder3 Says:
This video is well timed and much appreciated. I was just working on giving my PC a mid-life upgrade, including upgrading to a modular power supply.
Perhaps a video on UPS devices and how best to pick one to match one's PSU?
@IceJackal1984 Says:
can you make videos on UPS?
@keanubartolata3465 Says:
Can you please explain PSU topography? What is the future of PSU standards?
@robclaridge6236 Says:
A valuable teaching tool!
Will be sharing this among people new to building.
Thank you!
@Mighty_Cat_Mods Says:
A small contribution which we hope entitles us to point out that you misspelled "Lightning".
@Megatog615 Says:
in my experience modular PSUs end up taking up more space because of how bulky the cables are when most of them are used. i think i'll get a semi-modular one next time.
@andrew_koala2974 Says:
HP have its own uncommon connectors
6 pin and 4 pin connectors
@deandouglas6746 Says:
hank you teacher. much helpful
@voltare2amstereo Says:
You did miss the loss of -12v from atx v2 and the v1 versions had power more focused on 3.3 and 5v as these systems did draw directly from these for ram and CPU
13:55 except passive only supplies.
Though these are silly high-
I do like having at least the PSU fan as a case cooler, though I've been building PC's since the 90's
@offspringfan89 Says:
Great video as usual, Chris, but I really missed a mention of Cybenetics efficiency and noise certification programmes, which are far more relevant and thorough than 80 Plus nowadays.
@lauriesherlock4841 Says:
@jimfindley1004 Says:
i wish i knew why different power supply brands don't have cross compatible modular cables when they all do essentially the same thing. this isn't accepted anywhere else,i mean a corsair motherboard will accept any brand hdmi cable,usb of any kind,headphone jack,microphone jack. an off brand mouse connected via usb wont fry your motherboard but a evga psu modular cable plugged into a corsair psu is risky gamble that could fry your entire system
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