FSP VITA GM 850W ATX v3.1 PSU Review

Protection Features

OCP (Cold @ 27.2°C) 12V: 79.20A (111.82%), 12.007V
5V: 25.4A (127.00%), 5.071V
3.3V: 25.1A (125.50%), 3.327V
5VSB: 4A (133.33%), 4.987V
OCP (Hot @ 41.7°C) 12V: 75.60A (106.73%), 12.027V
5V: 25.1A (125.50%), 5.072V
3.3V: 24.9A (124.50%), 3.327V
5VSB: 4A (133.33%), 4.993V
OPP (Cold @ 27.1°C) 1032.61W (121.48%)
OPP (Hot @ 41.9°C) 992.59W (116.77%)
OTP ✓ (134°C @ Heat Sink)
SCP 12V to Earth: ✓
5V to Earth: ✓
3.3V to Earth: ✓
5VSB to Earth: ✓
-12V to Earth: ✓
PWR_OK Proper Operation
NLO
Fan Failure Protection
SIP Surge: MOV
Inrush: NTC & Bypass Relay

The 12V rail’s OCP triggering points are set low and differ enough between cold and hot conditions, so everything is good here. The same goes for the over power protection’s conservatively set triggering points, which have a high enough difference between cold and hot conditions. Moreover, the minor rails have correctly set OCP triggering points. Lastly, all other essential protection features are present and work well, except the fan failure protection. Manufacturers should start implementing this protection because it is crucial!

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7 thoughts on “FSP VITA GM 850W ATX v3.1 PSU Review

  1. Hi, between FSP Vita 850w and XPG Core Reactor II 850W which one would you recommend?
    The XPG is about $15 – $17 cheaper here

          1. It’s now sold out everywhere in my region, alternative would be NZXT C850 for 230v? NZXT is $10 more than the XPG or the XPG might still be better choice?

  2. I just got this PSU and am experiencing quite a bit of coil whine. Is this something you’ve had while performing your testing?

    Thinking of either replacing my set or just living with it.

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