Thermaltake Smart Pro RGB 850W PSU Review

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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: - 5V: 31.5A (143%) 3.3V: 34.6A (157%), 3.15V 5VSB: 3.7A (123%)
OPP1105.4W (130%)
OTP(120°C @ secondary side)
SCP12V: ✓ 5V: ✓ 3.3V: ✓ 5VSB: ✓ -12V: ✓
PWR_OKOperates properly
SIPSurge: MOV Inrush: NTC thermistor

Over-power protection is set quite high given this PSU's thermal output under high loads. Thankfully, over-temperature protection kicks in to protect the SPR-0850F-R if its fan can't keep up.

OCP on the minor rails is set high, especially at 3.3V, while at 5VSB it's set at a normal level.

There is short-circuit protection on all of the rails, and the power-good signal is accurate (though the hold-up time is pretty low).

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Contributing Editor

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