Corsair SF850L SFX-L PSU Review – The BEST SFX-L PSU

Protection Features

OCP (Cold @ 27°C)

12V: 85.8A (121.19%), 12.097V
5V: 28.7A (143.5%), 5.032V
3.3V: 30A (150%), 3.329V
5VSB: 5A (166.67%), 4.968V

OCP (Hot @ 44°C)

12V: 84.4A (119.21%), 12.103V
5V: 28.6A (143%), 5.035V
3.3V: 30A (150%), 3.331V
5VSB: 4.9A (163.33%), 4.967V

OPP (Cold @ 29°C)

1037.74W (122.09%)

OPP (Hot @ 45°C)

1021.21W (120.14%)

OTP

✓ (117°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

NLO

SIP

Surge: MOV
Inrush: NTC Thermistor & Bypass relay

The OCP triggering points are correctly set at 12V, but this is not true for the minor rails where OCP is sky-high, especially at 3.3V. There is no need for such high amperage at 3.3V. On the other hand, OPP is correctly set. All other protection features are present and work well.

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7 thoughts on “Corsair SF850L SFX-L PSU Review – The BEST SFX-L PSU

  1. Is the included 12VHPWR cable sufficient/safe for powering an RTX 4090 FE or should a 3×8 cable/adapter still be used? If it is sufficient and totally safe, does the manual specify which ports to use or doesn’t that matter?

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