Seasonic S12 620W weird 3.3v rail readings in software

Kevin2015 · Nov 25, 2014

I've recently purchased and installed a SS S12 620w PSU about 1 month ago on my rig and so far it seems to be doing great. However, I have noticed something rather strange (pictures included below). In various software tools that display a reading for the 3.3v rail, the reading seems to be pretty far off from 3.3v but also it seems to vary from program to program.

I'm wondering if someone has some insight as to why this is happening. ALso, if there is a problem with the 3.3v rail, how would this affect my PC?

Pictures:
http://imgur.com/Cc80f9z
http://imgur.com/WUTSSO7
http://imgur.com/H9drXDS

fkr · Nov 25, 2014

and your vcore is weird and your 12v is weird. bad sensor imo

i7Baby · Nov 25, 2014

Check it using your mobos uefi software. Its more reliable.

So far it looks like your PSU is faulty.

Mobo? CPU?

Kevin2015 · Nov 25, 2014

i7Baby :

Old budget mobo with no UEFI, I'll have a look in a bit at the BIOS any ways and post here if I find anything.

Biostar N68S3+
Athlon x4 640 running stock clocks

"and your vcore is weird and your 12v is weird. bad sensor imo"

I was leaning towards this conclusion myself, but I really dont' know enough about PSUs and sensors so I figured I'd ask.

Something to note is that I had a very low end HEC PSU in before this one that seemed to have "normal" readings in HWmonitor.

fkr · Nov 25, 2014

idk, if your 3.3v rail was that low I would have to think your computer would crash or not post

Kevin2015 · Nov 25, 2014

fkr :

Well I'm having absolutely no issues at all in practical usage so I guess I'll just assume it's the programs that aren't reading it right.

Thanks.

fkr · Nov 25, 2014

you could always contact seasonic and ask them. HDD logic boards used to run off of the 3.3 rail but idk if that is even true anymore

Kevin2015 · Nov 25, 2014

fkr :

I did contact them. All I got was this:

Thanks for contacting Seasonic - RMA Dept.
Please submit your RMA Request form online, so we can process your request ASAP.
http://www.seasonicusa.com/rma.htm

I'd prefer not to RMA if there's nothing wrong with it and if I'm not the only one to think that it's perhaps a problem with the readings I'll just keep using it for now anyways.

fkr · Nov 25, 2014

if you have a voltage measuring tool. you can test the orange and black to see what the voltage is is

http://pinouts.ru/Power/atx_v2_pinout.shtml

i7Baby · Nov 25, 2014

See step 23 - http://www.tomshardware.com/forum/261145-31-perform-steps-posting-post-boot-video-problems

Kevin2015 · Nov 26, 2014

Thanks guys.

I don't have a multimeter in my apartment right now, so I'll just keep using the PC as is for now. It'll be about a month before I get the multimeter I own back, I'll probably update this at that point if I find the voltages to be way off the mark when testing at the wires.

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Seasonic S12 620W weird 3.3v rail readings in software

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