The Thermaltake Toughpower SFX 750W Gold achieves high performance and it meets the corresponding ATX v3.0 transient response requirements. As in the 850W unit model though, I spotted problems in its protection features.
After checking the Thermaltake Toughpower SFX-L model with 1000W max power and the 850W model, I couldn’t leave the 750W out, especially since I found a problem with the protection issues in the 850W unit. This means I will focus on this section because protection features are crucial. The significant features of this unit include ATX v3.0, and PCIe 5.0 compatibility, thanks to its 600W 12VHPWR cable.
Setting this cable for 600W in a 750W unit is crazy, but almost all brands decided not to pay attention to Intel’s guidelines and set 12VHPWR cables for max power output in any case. In my samples, the 12VHPWR connector was set much lower than 600W, and I had to ask TT to confirm the setting in the final products. Although TT confirmed a 600W setting, I still read several reviews on Amazon.com stating that the cable is set at 300W, which is what the ATX v3.0 recommends! If you want to power an RTX 4080, you should avoid this PSU and go with a stronger model, either the 850W Toughpower or the 1000W one.
HKC builds these PSUs for Thermaltake, and the platforms use quality components. If they fix the protection features issues, this platform can lead the corresponding Wattage categories until at least Great Wall updates its offerings. GW has vast experience building SFX units, Corsair’s SF line included, so it will be interesting once it releases its PCIe 5.0 ready SFX models.