Sharkoon Rebel P20 750W ATX v3.1 PSU Review

Protection Features

OCP (Cold @ 28°C) 12V: 97.6A (156.16%), 12.193V
5V: 29.9A (149.5%), 5.04V
3.3V: 29.1A (145.5%), 3.301V
5VSB: 6.4A (213.33%), 4.892V
OCP (Hot @ 43°C) 12V: 96A (153.6%), 12.207V
5V: 29.9A (149.5%), 5.044V
3.3V: 29.1A (145.5%), 3.31V
5VSB: 6.3A (210%), 4.887V
OPP (Cold @ 28°C) 1103.1W (147.08%)
OPP (Hot @ 42°C) 1022.68W (136.36%)
OTP ✓ (150°C @ secondary side)
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

Since this is a relatively low-capacity unit, its 12V OCP triggering points are sky-high to cope with high transient loads. The same goes for the over power protection. The problem is that the 12V OCP cold and hot triggering points are not that far away from each other. Thankfully this is not the case for the respective over power protection triggering points.

The minor rails have high OCP triggering points; to make matters worse, they do not drop at high operating temperatures. Someone must inform all manufacturers that there is no need for such high power levels on the 3.3V rail!

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