EVGA 650GM 650W SFX Power Supply

REVIEW INFORMATION
SUPPLIED BY: EVGA
PRODUCT: EVGA 650GM 650W SFX
PROD LINK: 650GM Product Page
PRICE: $129.99 @ EVGA.com
Price is at time of testing!

We come once again to the load testing stuff. As always, a FastAuto load tester will be doing the loading, with the rest of the usual test gear getting the readings.

EVGA 650GM – STANDBY Load Tests
Test # +5VSB DC Watts/
AC Watts
P.F. Eff.
1 0.5A 2.49W/
2.95W
0.271 84.2%
4.97V
2 1.25A 6.19W/
7.54W
0.449 82.1%
4.95V
3 2.5A 12.3W/
15.6W
0.540 78.8%
4.92V

First, as always, the standby tests. We have some excellent looking readings here in the voltage column, with the unit measuring at 1% load regulation on the nose.

Efficiency is much better than average in tests one and two, but still well on the right side of the average line on test three. I’m pleased with this.

Let’s see how the rest of the load testing goes. Remember, I did change the scoring slightly and we now are incorporating crossload numbers into the voltage regulation.

EVGA 650GM – Cold Load Tests
Test # +3.3V +5V +12V DC Watts/
AC Watts
AC
Input
Eff. P.F. Intake/
Exhaust
Progressive Load Tests
1 1A 1A 4.6A 65.0W/
74.9W
120.2V 86.8% 0.950 25°C/
27°C*
3.291V 5.06V 12.05V
2 1.5A 1.5A 9.5A 129.4W/
143.1W
117.9V 90.4% 0.972 26°C/
31°C*
3.282V 5.06V 12.04V
3 3.5A 3.5A 24A 323.7W/
353.6W
117.4V 91.6% 0.993 27°C/
38°C*
3.255V 5.03V 12.02V
4 5A 5A 36A 482.7W/
534.9W
117.0V 90.2% 0.997 27°C/
52°C
3.230V 5.00V 11.99V
5 7A 7A 48.5A 650.5W/
738.9W
116.1V 88.0% 0.998 28°C/
59°C
3.202V 4.98V 11.98V
Crossload Tests
CL1 12A 12A 0A 100.5W/
120.0W
116.7V 83.8% 0.970 27°C/
48°C
3.250V 5.02V 12.06V
CL2 0A 0A 54.1A 647.7W/
733.4W
115.7V 88.3% 0.998 27°C/
54°C
3.232V 5.00V 11.95V

* Fanless operation.

First up, I have some really good news for those who like efficiency… this thing is actually 80 Plus Platinum. Test five is a big stretch, requiring all of my 1% error margin allowance to clear it, but it does get there. And it operates fanless up to test four, too, though it never turned off for the first crossload test as these units sometimes do.

Unfortunately, the unit wasn’t quite as good as the box led us to believe on regulation, at least on the 3.3V rail. That one works out to 2.70%, which is a strictly average looking number to me. However, the other two rails do make up for that with the 5V managing 1.20% and the 12V doing 0.83%. That works out to a three output average of 1.58%, which fortunately puts it on the right side of the box promises for scoring later. I wish the 3.3V output had better load regulation than it does, but this is not a deal breaker.

And no, I could not hear the fan. I have no way to measure how loud they are, so that mere observation is going to have to suffice.