Thermaltake Toughpower GF A3 750W ATX v3.1 PSU Review – Silent Platform Change, Messy Protection Features & Fake 80 Plus Badge

Protection Features

OCP (Normal @ 30°C) 12V: 92.20A (147.52%), 11.675V
5V: 31A (155.00%), 4.967V
3.3V: 28.9A (144.50%), 3.305V
5VSB: 5.5A (183.33%), 4.911V
OCP (Hot @ 45.0°C) 12V: 92.00A (147.20%), 12.003V
5V: 31A (155.00%), 4.962V
3.3V: 29.2A (146.00%), 3.266V
5VSB: 5.3A (176.67%), 4.915V
OPP (Cold @ 25.1°C) 1010.08W (134.68%)
OPP (Hot @ 42.1°C) 1084.63W (144.62%)
OTP ✓ (157°C @ 12V Heat Sink)
SCP 12V to Earth: ✓
5V to Earth: ✓
3.3V to Earth: ✗(Sample #1)
5VSB to Earth: ✓
-12V to Earth: ✓
PWR_OK Proper Operation
NLO
Fan Failure Protection
SIP Surge: MOV
Inrush: NTC & Bypass Relay

The OCP triggering points are sky-high, and to add injury to insult, the normal and hot OCP points are similar. To make matters even worse, the over power protection’s triggering point is notably higher at high temperatures, while it should be the other way around! The PSU is stressed more at high operating temperatures, so it is only natural to tune the triggering points to lower.

Another major issue we faced with the first sample is that it died during the short circuit evaluation between 3.3V and Earth. We had a second sample, which passed this test. However, we cannot be sure if everything is ok with such a small sample pool. Surely, the fact that the first one died during SCP (3.3V) evaluation is not a good sign.

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4 thoughts on “Thermaltake Toughpower GF A3 750W ATX v3.1 PSU Review – Silent Platform Change, Messy Protection Features & Fake 80 Plus Badge

  1. —“… a brand changes OEMs without changing the product’s name or providing some information on the box to help buyers distinguish the different versions.”

    Aris, is there at least some info on the outside of the unit when it’s not on the box?
    If not, that’s pretty rude 😈

  2. Totally blasted the Thermaltake Toughpower GF A3 750W ATX v3.1, but that’s fair enough.
    Failure to style by TT.

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