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Funky PSU voltages...

post #1 of 15
Thread Starter 
Hey all,
I have a rig with some very odd voltage readouts through Speed Fan. It also locks up every once in a while...
Please take a look and give me your opinion...could it be due to a bad PSU???

Board: Gigabyte X38-DQ6
cpu: E6550
GPU: ATI 3870
PSU: EZ-Cool 450w

Sorry abou tthe massive screenshot...

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post #2 of 15
The only voltage that is out of whack, ignoring the -12V and -5V, is the 12V. But, there is no way it is at 8.5V and the computer is still running. So it looks like your motherboard sensor is inaccurate. Anyway, when does it lock up? If it happens at full load, it is very possible that you are over stressing that psu. That's a bad idea since it is a junk psu with only 25A on the 12V rail (if it can actually provide that at a reasonable temperature).
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post #3 of 15
You should be fine with that PSU though according to the datasheet I just looked at.

I'd grab another application such as Everest or HWMonitor and see what they report. If they show something a little bit more normal do your voltages stay within the +/- 5% range?
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post #4 of 15
Might recommend using a different monitoring tool. Everest seems to be the most accurate. Ultimate costs money, but if you go here you can get the version that is free.

While Speedfan isn't terrible, it isn't the best. It sometimes gives me 3,900,000RPM on fans
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post #5 of 15
Voltage sensors are often read to be wildly inaccurate. Grab a multimeter to monitor the voltages better (there are guides on here). I would consider getting a better quality PSU even so, cheap PSUs are a false economy - If they go wrong they can be more likely to damage your components. And that PSU looks a little underpowered for that rig. Something over 500w with a high amp 12v rail would be better.
Most of the PSUs by Corsair, Seasonc Antec, Thermaltake or PC Power and Cooling are great quality and some are good value too.
post #6 of 15
Thread Starter 
Ooooooh, harsh words
Actually, it's a rig i built for a friend, and i was told it's a decent PSU (i have the Enermax Liberty 620w...)
Everest gives a 12v a 4.x reading, so...
I'll waranty it, and upgrade to a better unit.

Thanks for the quick reply!!
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so old school 
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post #7 of 15
Quote:
Originally Posted by jamracing View Post
Ooooooh, harsh words
Actually, it's a rig i built for a friend, and i was told it's a decent PSU (i have the Enermax Liberty 620w...)
Everest gives a 12v a 4.x reading, so...
I'll waranty it, and upgrade to a better unit.

Thanks for the quick reply!!
Everest reads off the same sensor as all other do... it is close to useless. Get a multimeter.
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Once again...
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post #8 of 15
Quote:
Originally Posted by jamracing View Post
Ooooooh, harsh words
Actually, it's a rig i built for a friend, and i was told it's a decent PSU (i have the Enermax Liberty 620w...)
Everest gives a 12v a 4.x reading, so...
I'll waranty it, and upgrade to a better unit.

Thanks for the quick reply!!
You still don't know if it is malfunctioning, why would you try to RMA it? Like I said, there is a good chance you are just asking too much of the psu, it's not the psus fault. When does it lock up?
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i7 monsta
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post #9 of 15
Thread Starter 
It's not a clear cut issue. I ran the burn in program for 15 minutes, and it completed successfully. But then again ,it can go through 4-5 power cycles without POST'ing (you hit the power button, and it just won't power on properly, like there's not enough juice...)
N.A.S.A's nemesis
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CPUMotherboardGraphicsRAM
E8500@4.2Ghz (1.28v) Gigabyte EP45-UD3P Sapphire HD4870 Toxic 4GB G.Skill 900 Pi 
Hard DriveOptical DriveOSMonitor
Raptor 150, 2x200GB mirror ASUS lightscribe x2 7 Ultimate x64 ASUS 22" wide w/camera 
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Logitech Enermax Liberty 620w Cooler Master Stacker Logitech 
Mouse Pad
so old school 
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N.A.S.A's nemesis
(13 items)
 
  
CPUMotherboardGraphicsRAM
E8500@4.2Ghz (1.28v) Gigabyte EP45-UD3P Sapphire HD4870 Toxic 4GB G.Skill 900 Pi 
Hard DriveOptical DriveOSMonitor
Raptor 150, 2x200GB mirror ASUS lightscribe x2 7 Ultimate x64 ASUS 22" wide w/camera 
KeyboardPowerCaseMouse
Logitech Enermax Liberty 620w Cooler Master Stacker Logitech 
Mouse Pad
so old school 
  hide details  
Reply
post #10 of 15
i have not found any software that has been close to right on the other volts since i switched to a p35 chipset. vcore and vdimm seem to be right but all others can be miles off.

all software read mine as
+12v= 1.1v ish
-12v=-17v ish
-5v=-8.5v ish
but the +/-3v seems to ok too.
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still frags n00bs
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