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+12V -12V Voltage Variations

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I've had my Antec SL400 running for about 4 years now. I ran SIW the other day and found that my +12V is coming in at 12.96 and -12V at -12.96. +5 and +3.3 is fine, -5V is at -5.46. Most importantly, core voltage is set in bios at 1.65V but is being picked up by BIOS and SIW at 1.71 - 1.74V. My temps in SIW are as follows:

MB 26C
CPU (Socket) 63C
CPU (Die) 41C
HDD 25C

I'm worried that my power supply is starting to die, but don't know if these variances are within tolerance. Should I even bother with a new PS? I am planning on building a new PC within the next year and a half (need money :p ), so I don't want to put out a bunch of money. To get this one up to speed I was going to buy:

Rosewill Stallion 400W (if needed)
Saphhire Radeon 9550 256MB 4xAGP (i dont have a 8x slot)
1GB PC2700 Patriot memory
80GB WD ATA100hd

Total cost including shipping and tax: $233

My current specs are
Asus A7V-333x
Athlon XP 2600+ 2.08 Ghz (this oddly is read running between 1.971 and 2.07 GHz)
768 PC2700
40GB WD HDD
12GB Maxtor HDD
Radeon 9000 Pro 64MB 4xAGP

Is it even worth it or should I ride what I have to the death and try and afford a new one? Further, should I by the Rosewill or spring for something a little better?

More about : 12v 12v voltage variations

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wow that's high - and out side a 5% spec

too high is weird if was not before it could be a sign of impending disaster if the psu is have difficultly knocking down the 120v

well looking at your system you could upgrade for $200 on ebay -- i think its time for an upgrade?
 
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