MSI MAG A850GL PCIE5 850W PSU Review

Protection Features

OCP (Cold @ 25°C) 12V: 91.8A (130.21%), 12.088V
5V: 27.2A (136%), 4.979V
3.3V: 29.1A (145.5%), 3.25V
5VSB: 3.7A (148%), 5.015V
OCP (Hot @ 40°C) 12V: 89.4A (126.81%), 12.111V
5V: 26.2A (131%), 4.984V
3.3V: 29A (145.5%), 3.251V
5VSB: 3.7A (148%), 5.012V
OPP (Cold @ 26°C) 1083.16W (127.43%)
OPP (Hot @ 37°C) 1044.08W (122.83%)
OTP ✓ (155°C @ 12V Heat Sink)
SCP 12V to Earth: ✓
5V to Earth: ✓
3.3V to Earth: ✓
5VSB to Earth: ✓
-12V to Earth: ✓
PWR_OK Proper operation
Fan Failure Protection
SIP Surge: MOV
Inrush: NTC Thermistor & Bypass relay

OCP at 12V and OPP are correctly set, not allowing the PSU to exceed its limits. I will also give a pass to the 5V rail’s OCP setting, but I cannot do that at 3.3V since there is no reason for this rail to go so high! All other essential protection features are present and work well.

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