Corsair HX850 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: >40A (in multi-+12V rail mode) 5V: 33.2A (132.8%) 3.3V: 35.3A (141.2%) 5VSB: 6.5A (216.7%), 63mV ripple
OPP1028.35W (120.98%)
OTP✓ (160°C @ secondary side)
SCP12V: ✓ 5V: ✓ 3.3V: ✓ 5VSB: ✓ -12V: ✓
PWR_OKOperates properly
NLO
SIPSurge: MOV Inrush: NTC thermistor & bypass relay

The minor rails' OCP triggering points are set high, as they are in most PSUs. Similarly, we find a sky-high triggering point on the 5VSB rail, allowing increased ripple. Corsair should really bring this down a bit.

Finally, OPP is set properly at around 121%. OTP is at the correct level as well, given that this is a semi-passive PSU.


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Aris Mpitziopoulos
Contributing Editor

Aris Mpitziopoulos is a contributing editor at Tom's Hardware, covering PSUs.