Thermaltake Toughpower PF3 750W PSU Review

Protection Features

OCP (Cold @ 27°C) 12V: 89.4A (143.04%), 12.02V
5V: >30A (>150%), <4.978V
3.3V: >30A (>150%), <3.319V
5VSB: 5.6A (186.67%), 4.99V
OCP (Hot @ 35°C) 12V: 90.2A (144.32%), 12.032V
5V: >30A (>150%), <4.977V
3.3V: >30A (>150%), <3.32V
5VSB: 5.5A (183.33%), 4.995V
OPP (Cold @ 24°C) 1127.67W (150.36%)
OPP (Hot @ 38°C) 1124.62W (149.95%)
OTP ✓ (146°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

Since this is a low-capacity ATX v3.0 unit, the 12V rail’s OCP is expected to be high, but I do not want to see a higher OCP at higher operating temps than low ones. This is unacceptable since the PSU’s stress is much higher at high temps. The minor rails also have sky-high OCP triggering points.

OPP is set high and its triggering points are similar at cold and hot temps, which is a no-go for me. There should be a notable difference between high and low temps in OPP’s settings. The other essential protection features are present, but I am disappointed by OCP and OPP, so the PSU will lose performance points.

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