How can I check an EVGA Supernova P2 1200W 's 12V output.

[PeterZ640]

Are the above readings acceptable deviations?
It would seem so after reading the following detailed review??
https://www.techpowerup.com/mobile/reviews/EVGA/SuperNOVA_P2_1200/5.html

OK MB has been RMA'ed the bios says the CPU has a VCore of 1.474V. But CPU-Z said it was 0.73V and onother program showed it was 0.738V.
IMO the MB's readings are crazy.
The system started crashing out left right and centre. Then needed Windows 10 completely reloaded 2x - hence I sent it back for replacement.

Intel kindly replaced the CPU, as it failed their diagnostic program.

Honestly I have no clue what was wrong, could it have been a duff CPU ( personally never had an Intel CPU fail, let alone a Xeon CPU.) or the motherboard could have damaged the CPU.

Sort of belt and braces I thought I would check the PSU's output 12V voltage, as the Bios said that was 12.091V ( EVGA support said their tolerance should not go over 12.06V or 12.60V I just cant remember now) . Yes I know, I should have been more attentive, but as a novice, trouble shooting stuff like VCore Voltages and Core VIN Voltages is mind boggling.

Any idea how accurate a PSUs 12V output should be.

So I thought I Would use the time me to check it out, while I Wait for the MB to be hopefully replaced.

How do I do that?
Can I just turn thecPSU on and say check the Sata power cable pinout 14 or 15 which I assume is 12V +
And find a ground pinout for the ground , and then check using a Multimeter.?

The PSU does have a sort of plug thing one puts on the 24 pin ATX power block, to " test" it ? It also says this is useful if you have a Water cooled system, for filling it or something? " says it saves the user having to short out some pins" ??

Would I have to put this plug thing on the end of the (currently disconnected) PSU's 24 pin CPU power connector?
Or should I just test a sata power cable or must I check the Voltage on the 24 pin ATX MB power block?

Any ideas how one tests what the output voltage really is? And what is acceptable?

Thanks

Note I Think this power supply is a rebadged "Superflower Leadex 1200w" psu.

 

[Ralston18]

Start with this link in this forum.

http://www.tomshardware.com/reviews/how-we-test-psu,4042.html

 

[nostall]

Those read outs look just fine: Well within the ATX specifications. In the article Ralston18 referenced is a chart showing the voltage ranges. You mention EVGA's limit and it is probably 12.6V as .6 volts is 5% fluctuation and that is typical for top-of-the-line
PSU's.
Here's a good article regarding the various plugs that have been used over the years, but for you the important part will probably be the voltages of various wires:
http://www.playtool.com/pages/psuconnectors/connectors.html
Generally 'black' is ground,
orange is +3.3volt, red is +5 volt and yellow is +12 Volt. You can use the "block" thing (it jumps the black and 'green' wire so the PSU will power up) and use your multi-meter to test the voltages: Be sure to plug the MultiM black lead into a ground pin on
the lead you are testing.
Sorry about the cpu being bad, but there are several posts here on Tom's where that has been the problem part; they always surprise me when that happens 'cause generally CPU's are rock solid dependable.

 

[PeterZ640]

Start with this link in this forum.

http://www.tomshardware.com/reviews/how-we-test-psu,4042.html

Thanks always good to get info when you are starting out.

 

[PeterZ640]

Those read outs look just fine: Well within the ATX specifications. In the article Ralston18 referenced is a chart showing the voltage ranges. You mention EVGA's limit and it is probably 12.6V as .6 volts is 5% fluctuation and that is typical for top-of-the-line
PSU's.
Here's a good article regarding the various plugs that have been used over the years, but for you the important part will probably be the voltages of various wires:
http://www.playtool.com/pages/psuconnectors/connectors.html
Generally 'black' is ground,
orange is +3.3volt, red is +5 volt and yellow is +12 Volt. You can use the "block" thing (it jumps the black and 'green' wire so the PSU will power up) and use your multi-meter to test the voltages: Be sure to plug the MultiM black lead into a ground pin on
the lead you are testing.
Sorry about the cpu being bad, but there are several posts here on Tom's where that has been the problem part; they always surprise me when that happens 'cause generally CPU's are rock solid dependable.

Thanks for the detailed reply ... so appreciated.
The block thing now makes sense i.e to allow it to power up.
Well at least I am on the right track. As I assumed 12.091 was pretty good as thats only a 0.7% deviation, and that detailed review showed theres being 12.145 to 12.07 V and praised it.
Sadly EVGA cosmetically use all black wires.
So its down to looking at a pin out diagram.

 

[nostall]

Those read outs look just fine: Well within the ATX specifications. In the article Ralston18 referenced is a chart showing the voltage ranges. You mention EVGA's limit and it is probably 12.6V as .6 volts is 5% fluctuation and that is typical for top-of-the-line
PSU's.
Here's a good article regarding the various plugs that have been used over the years, but for you the important part will probably be the voltages of various wires:
http://www.playtool.com/pages/psuconnectors/connectors.html
Generally 'black' is ground,
orange is +3.3volt, red is +5 volt and yellow is +12 Volt. You can use the "block" thing (it jumps the black and 'green' wire so the PSU will power up) and use your multi-meter to test the voltages: Be sure to plug the MultiM black lead into a ground pin on
the lead you are testing.
Sorry about the cpu being bad, but there are several posts here on Tom's where that has been the problem part; they always surprise me when that happens 'cause generally CPU's are rock solid dependable.

Thanks for the detailed reply ... so appreciated.
The block thing now makes sense i.e to allow it to power up.
Well at least I am on the right track. As I assumed 12.091 was pretty good as thats only a 0.7% deviation, and that detailed review showed theres being 12.145 to 12.07 V and praised it.
Sadly EVGA cosmetically use all black wires.
So its down to looking at a pin out diagram.

Use the link I sent and check either at the 24 pin main plug or the separate power leads. Make sure the 24 pin is oriented the same as the one in the pictures so you get the correct wire. EVGA might also have a wiring schematic on the web site, but the plugs and leads are all standardized so it shouldn't be two hard to figure out.

 

[PeterZ640]

Thanks
I think I will use the SAta one as that L shaped plug is hard to get it wrong