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EVGA 650 B3 PSU Review: No (Fixed) Cables Attached

Protection Features

Check out our PSUs 101 article to learn more about PSU protection features. Our protection features evaluation methodology is described in detail here.

Protection Features
OCP12V: ✗ 5V: 30A (150%) 3.3V: 29.5A (147.5%) 5VSB: 5.1A (170%)
OPP903.58W (139%)
OTP✓ (150°C @ 12V heat sink)
SCP12V: ✓ 5V: ✓ 3.3V: ✓ 5VSB: ✓ -12V: ✓
PWR_OKOperates properly
NLO
SIPSurge: MOV Inrush: NTC thermistor

The over-power protection feature is set too high. To the 650 B3's credit, though, at least it didn't die like EVGA's 450 B3, 750 B3, and 850 B3 during the same test.

Over-current protection on the minor rails is configured reasonably well, while the power-good signal is accurate. We do not approve of EVGA's decision to omit a bypass relay, which would have allowed the NTC thermistor to remain at a low temperature with the PSU running. That way, it could provide protection during a hot restart with the bulk cap being discharged.

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