HELP - PSU gurus

cleeve

Illustrious
Hi guys,

Both ASUSProbe and my BIOS are showing my 12v rail is putting out ~13v.

I used a voltmeter to check the voltage, and it reports it as 12.6 on a molex connector.

Unfortunately, I can't directly check the 12v that attaches to the motherboard because it's an X-connect PSU, with that custom mobo cable that doesn't have any spaces to put the meter's probe into to take a reading...

The question I have is, will the molex read exactly the same voltage that's available to the mobo, or do some PSUs have separate internal 12v rails? - in which case, the molex 12v reading isn't necessarily the same as the mobo 12v power?

knowwhatImean?

Thanks,

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<b>Geforce <font color=red>6800 Ultra</b></font color=red>
<b>AthlonXP <font color=red>3200+</b></font color=red> <i>(Barton 2500+ o/c 400 FSB)</i>
<b>3dMark05: <font color=red>5,275</b>
 

fishmahn

Distinguished
Jul 6, 2004
3,197
0
20,780
12.6v is ok. Actually, that's pretty good IMO.

AFAIK, All but the new ATX2.0 PSUs put all the 12v on one 'rail' so what you read off a molex is what the mobo gets too.

The exception is the new ones that have split 12v lines. You can tell if you have one by looking at the amp ratings on the label of the PSU. If there's 2 "+12v" columns, then you have the split 12v, and your concern would be correct.

Mike.
 

cleeve

Illustrious
Thanks man. I'm pretty sure the X-connect is ATX 1.1 spec... so I should be OK.

________________
<b>Geforce <font color=red>6800 Ultra</b></font color=red>
<b>AthlonXP <font color=red>3200+</b></font color=red> <i>(Barton 2500+ o/c 400 FSB)</i>
<b>3dMark05: <font color=red>5,275</b>
 

Renegade87

Distinguished
May 19, 2001
175
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18,680
Cleeve,

The Ultra X-Connect 500w is actually a ATX 1.2 Hybrid (where they offer the SATA cables) and has a 34amp max on the single +12v rail (I just replaced my Ultra with a PC Power & Cooling Turbo Cool 510 Deluxe).

Actually, 12.6 is right on the hairy edge of the +/- 5% voltage regulation spec. A lot of people have had problems with these PSU's, so keep a close eye on your voltages whenever possible and If you start to see instability in your Rig, you may need to replace it (to be safe) before it takes out half your PC.

"The world ends when you're dead. As long as your breathing you got more punishment in store. Stand it like a man and give some back."