Thermaltake Toughpower SFX 850W Gold PSU Review

Protection Features

OCP (Cold @ 26°C) 12V: >104A (>146.87%), <11.776V
5V: >28A (>140%), <5.08V
3.3V: >27.1A (>135.5%), <3.34V
5VSB: >4.3A (>143.33%), <4.903V
OCP (Hot)
OPP (Cold @ 35°C) >1277.52W (>150.3%)
OPP (Hot)
OTP ✓ (>185°C @ 12V Secondary)


12V to Earth: ✓
5V to Earth: ✓
3.3V to Earth: ✓
5VSB to Earth: ✓
-12V to Earth: ✓

PWR_OK Proper Operation
SIP Surge: MOV
Inrush: NTC Thermistor & Bypass Relay

OCP is sky-high on all rails, and to make matters worse, the PSU broke during the cold OPP test, exceeding 150% of its max-rated capacity! To add insult to injury, the second sample broke during the over-temperature evaluation test. It stopped working at 185°C and didn’t start again. HKC needs to take a good look at the protection features.

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2 thoughts on “Thermaltake Toughpower SFX 850W Gold PSU Review

  1. Mine has a horrid whine when the fan can’t decide wether it wants to spin or not. This doesn’t seem to be an uncommon issue either which is annoying. So far warranty support has been unhelpful.

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