Sharkoon Rebel P20 1200W ATX v3.1 PSU Review

Protection Features

OCP (Cold @ 30°C) 12V: 129.4A (129.4%), 12.17V
5V: 30.3A (151.5%), 5.003V
3.3V: 29.1A (145.5%), 3.305V
5VSB: 6.4A (213.33%), 4.92V
OCP (Hot @ 42°C) 12V: 129.4A (129.4%), 12.188V
5V: 30.2A (151%), 5.011V
3.3V: 29.1A (145.5%), 3.309V
5VSB: 6.4A (213.33%), 4.922V
OPP (Cold @ 29°C) 1667.13W (138.93%)
OPP (Hot @ 43°C) 1302.96W (108.58%)
OTP ✓ (140°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
Fan Failure Protection
SIP Surge: MOV
Inrush: NTC Thermistor & Bypass relay

The 12V OCP triggering points are both below 130%, which I consider a normal level, but they are identical. The hot triggering point should be notably lower to protect the PSU effectively. The OCP triggering points on the minor rails are also similar and highly set, especially the 3.3V one. There is no need for 29A on this rail! Thankfully, the OPP triggering point is highly affected by hot conditions, providing adequate protection to the unit.

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