After a long time.. I'm back. Unfortunately, I have a problem.

I have a new computer. ASUS A7N8X-E DELUXE REV 1.01, AMD 2800+ BARTON, 2X512MB SUPERTALENT CL2, MSI RADEON 9800PRO.

The problem is that the +12V is to high... around 12,9 and when I play some games is sometimes above 13 and ASUS PROBE starts giving a sound advice.
I have a generic 450W power supply (28A on the +3.3V, 50A on the +5V, 18A on the +12v). I know that ASUS PROBE is not perfect but I checked and it is true that the values are high.

What can I do?

I've been using the Antec TrueControl p/s's so I can adjust the voltages with a Fluke digital VOM as my test device. You may want to give that a try. Either the p/s is putting out too much voltage or your mobo is not regulating them properly or both. Have you looked at the voltages in BIOS to see if they are the same as in the Probe? I've found that the Asus Probe is fairly close on the voltages but not the temps.....

1 volt is well within the 10% tolerence for the 12v rail I would think. If it was 1v on the 3.3v or 5v rail than I would be concerned.