We put our system under what can be considered a heavy user load, using extreme CPU and graphics 3D use with 3D Mark 06 v1.0.2. Our test PC setup was as follows:

• ASUS M2N32Pro WS + AMD Athlon 64 X2 4600+ AM2
• Gainward 8800GTX
• 2x1GB Crucial PC2-8000
• 1xWD 80JB SATA I
• 1xSeagate 80GB SATAII

All PSU ratings were monitored with Everest Ultimate Edition v3.0. The following table lists the industry wide specifications for DC Output Voltage Regulation.

 

After running 3D Mark 06, the monitored outputs showed the deviation experienced by each rail during the stress tests:

		Minimum	Maximum	Average
CPU1	%	0	100	54,9
CPU2	%	0	100	39,2
CPU Core	V	1,34	1,34	1,34
+3.3 V	V	3,25	3,26	3,25
+5 V	V	4,89	4,93	4,92
+12 V	V	12,22	12,30	12,28

The results are very good. All ratings are well within limits. Even at full load, the voltage only deviates by 0.01~0.08V. Adding a second Nvidia 8800GTX VGA card in your system will put additional load on the PSU, but this PSU can handle it without any problems.