Seasonic Prime Titanium Fanless 600W 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: 71.8 (143.6%), 12.147V 5V: 28.2A (141%), 5.038V 3.3V: 27.2A (136%), 3.336V 5VSB: 4.2A (168%), 4.793V, >65mV ripple
OPP876.88W (146.1%)
OTP✓ (160°C @ secondary side)
SCP12V: ✓ 5V: ✓ 3.3V: ✓ 5VSB: ✓ -12V: ✓
PWR_OKOperates properly
SIPSurge: MOV Inrush: NTC thermistor & bypass relay

This fanless PSU delivers almost 877W of power before its over-power protection (OPP) kicks in. That's impressive, to say the least. Over-current protection (OCP) on the minor rails is set normally, given our expectations. Meanwhile, it should probably be set a little lower on the 5VSB rail since ripple gets out of control with 4.2A of current.

The over-temperature protection feature is configured properly, given the lack of a cooling fan. Short-circuit protection is available on every rail, the power-good signal is accurate, and the PSU is protected from voltage spikes and large inrush currents as well.

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Contributing Editor

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