Thermaltake Toughpower PF1 850W
A tough power supply from Thermaltake that can handle harsh conditions.
The Thermaltake Toughpower PF1 with 850-watt max power is a decent PSU that packs many good features. With 850W capacity, this PSU can handle a power-hungry CPU and GPU combo, for example, an Intel i9-10900K or AMD Ryzen 9 5950x and an Nvidia RTX 3080 or AMD RX 6800XT. It features an RGB-everywhere approach, with 18 configurable LEDs, an RGB fan and ARGB side panels that illuminate the product branding, and is compatible with Asus, Gigabyte, MSI and Asrock lighting systems.
On the 80 PLUS scale, the PF1 850 is classified as Platinum, while in Cybenetics, it earns the ETA-A and LAMBDA-A- efficiency and noise ratings. All cables are modular, and the cooling fan uses a hydraulic bearing with long life under normal operating temperatures. Finally, the PSU features semi-passive operation, meaning that its cooling fan doesn’t spin at low loads to keep the noise output low. You can toggle this mode off if you want the fan to run constantly.
There are plenty of cables and connectors, including two EPS, six PCIe, twelve SATA and four 4-pin Molex. There is even an FDD adapter provided for those of you that might need one. Cable length is satisfactory, and it is nice to see an adequate distance between the peripheral connectors. Lastly, there are no in-cable caps, which make cable routing a tough task.
The design is clean, allowing for increased airflow, and the lack of proper heat sinks on the secondary side makes a huge impression. On the contrary, the heat sink on the primary side is quite large, always for this efficiency category’s standards. Thermaltake used good electrolytic caps and an HDB fan. The FETs look to be of good quality, too.
The transient filter does a decent job of suppressing EMI emissions. The only problem is that it doesn’t include an MOV, which protects against voltage surges. Finally, there is an NTC thermistor-relay combo for lowering the inrush currents.
The 12V FETs are soldered on the top side of the PCB. Usually, these FETs are on the PCB’s solder side, and some manufacturers also use the PSU’s chassis to cool them down through thermal pads. The advantage of having them in this area is that the unit’s fan can directly cool them. At normal operating temperatures, the fan speed profile is relaxed compared to high ambient. In no case did the PSU’s fan noise exceed 40 dBA.
The competition is tough in this category, and this is a good PSU. The build quality is satisfactory, and the manufacturer used good parts, including Chemi-Con capacitors and a hydraulic bearing fan. It’s an efficient unit that’s nice and quiet under normal conditions. As expected, it’s fully modular and sports a high number of connections.
“With 850W capacity, this PSU can handle a powerhungry CPU and GPU combo, for example, an Intel i9-10900K or AMD Ryzen 9 5950x and an Nvidia RTX 3080 or AMD RX 6800XT.”
The Thermaltake PF1 850 has decent overall performance, but it doesn’t standout in a category with stiff competition. ★★★1/2☆