Why you can trust Tom's Hardware Our expert reviewers spend hours testing and comparing products and services so you can choose the best for you. Find out more about how we test.
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 | |
| OCP | 12V: ✗ 5V: 30A (150%) 3.3V: 29.5A (147.5%) 5VSB: 5.1A (170%) |
| OPP | 903.58W (139%) |
| OTP | ✓ (150°C @ 12V heat sink) |
| SCP | 12V: ✓ 5V: ✓ 3.3V: ✓ 5VSB: ✓ -12V: ✓ |
| PWR_OK | Operates properly |
| NLO | ✓ |
| SIP | Surge: 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.
MORE: Best Power Supplies
MORE: How We Test Power Supplies
MORE: All Power Supply Content
Netgear Orbi 970 Wi-Fi 7 mesh router review: Excellent performance with a price tag that’s tough to swallow
Intel's co-CEO claims retailers say Qualcomm-powered PCs have high return rates, points to new competitors with Arm chips coming in 2025
Nvidia teases RTX 50 Blackwell Gaming GPUs for launch next month — The Witcher IV's first cinematic trailer likely leveraged the upcoming RTX 5090
