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PSU Issue

P

panamakid

n00b
Joined
Jul 5, 2012
Messages
3
Tried searching the forums since im new but all I got was a page time out.

I have a 4-5 year old 800w TT PSU.

The question I have is that my -12V (I do not know how important this number is) will hang around -12.36V (idle) and hit -5 to -3V under CPU load and under CPU/GPU load -7 to -5v.

My +5V rail is around 4.06V

When I run the GPU only test I get 300fps but once it switched to CPU/GPU it drops over 50% in frames (around 120fps) this is with the occt psu test.

these numbers are with a vMeter - they're somewhat near what bios/software reading say.

thanks for your help and if you can point me in the right direction I'd gladly appreciate it.
 
If those are measured with a volt meter, then you have one of the many Thermaltake PSUs that were crap even when new. Get a quality unit from Seasonic, Antec, XFX, or Corsair to name a few.
 
thanks, what I'm i Looking at to determine if a PSU is pretty good?

I have an AMD FX 8120 @ 4.5ghz
16 gigs of ram DDR1600 @ 1600mhz
512 SSD / 1TB raid0 HDD
2 6950s xFire
GA-990FXA-UD3 board
 
panamakid said:
thanks, what I'm i Looking at to determine if a PSU is pretty good?

I have an AMD FX 8120 @ 4.5ghz
16 gigs of ram DDR1600 @ 1600mhz
512 SSD / 1TB raid0 HDD
2 6950s xFire
GA-990FXA-UD3 board
Click to expand...

Look on JohnnyGuru or [H] for reviews, most all of the units from the manufacturers I listed from my last post are nice PSUs. Antec/Corsair and many others OEM Seasonic PSUs and rebadge them so you'll probably end up with a Seasonic internally. With the system you have, you'd best shop in the 750W-800W range presuming you aren't folding or bitcoining.

Those negative voltages are less important as they aren't used as much as the positive... but given those measurements are well outside of ATX spec, I'm presuming the other rails are too.
 
Skripka said:
Look on JohnnyGuru or [H] for reviews, most all of the units from the manufacturers I listed from my last post are nice PSUs. Antec/Corsair and many others OEM Seasonic PSUs and rebadge them so you'll probably end up with a Seasonic internally. With the system you have, you'd best shop in the 750W-800W range presuming you aren't folding or bitcoining.

Those negative voltages are less important as they aren't used as much as the positive... but given those measurements are well outside of ATX spec, I'm presuming the other rails are too.
Click to expand...

Where's the Thank you button!

Again thanks for your help and knowledge. I'll read up on what you've mentioned.
 
yup that is an old PSU....bet a few Caps are bulged in your PSU.
 
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