EVGA 450 BT PSU Review: Amazing Value At $25

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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.

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Protection Features
OCP12V: 40.4A (115.4%), 11.47V 5V: 28A (155.56%), 4.459V 3.3V: 26.1A (145%), 3.328V 5VSB: 4.5A (180%), 5.005V
OPP532.13W (118.25%)
OTP✓ (180°C @ 12V heat sink)
SCP12V: ✓ 5V: ✓ 3.3V: ✓ 5VSB: ✓ -12V: ✓
PWR_OKOperates correctly
SIPSurge: MOV Inrush: NTC thermistor & bypass relay

EVGA did well to keep the OPP's triggering point lower than 120%. That wasn't the case with its 450 B3, which treated us to a spectacular failure during our review back in 2017. The over-temperature protection point looks to be set fairly high, unfortunately, especially for a PSU rated for operation at a mere 30°C. At least the power-good signal is accurate, and there is short circuit protection on all rails.

The 450 BT impressed us with a bypass relay supporting its NTC thermistor. Most manufacturers don't use a relay in their lowest-cost power supplies. It's only a shame that the 450 BT's NTC thermistor isn't large enough to prevent high inrush current.

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Contributing Editor

Aris Mpitziopoulos is a Contributing Editor at Tom's Hardware US, covering PSUs.