A Detailed Look

The steel enclosure of the Thermaltake Toughpower XT Series 850W power supply features a gray/brown finish and measures 160mm (6.3”) long, so it should fit into most cases. The XT 850W PSU uses a single 140mm fan on the bottom for cooling. The fan speed is automatically controlled by the internal component temperature (speeds up as the combined load and temperature increases) via an onboard speed controller. The 140mm Yate Loon Electronics fan (D14BH-12) is rated for 0.7A when operating on 12 VDC.

The backside panel includes a power receptacle, On-Off switch, and a 3-position switch that sets the fan delay time (Auto, 15 sec. or 30 sec.). The open grill structure on the back allows air to exhaust out of the power supply with minimal restriction and turbulence.

The S.P.T. Indicator consists of three LEDs on the side of the power supply. Assuming you have a side panel window in your case, you can see the status.


The XT Series 850W PSU comes with a very good assortment of modular cables, which are covered with black plastic mesh sleeving. The ATX 24-pin motherboard connector is the only fixed cable.

Fixed Cable:
• (1) ATX 20/24-pin
Modular Cables:
• (1) ATX12V/EPS12V 4-pin and 8-pin
• (2) PCI Express 6-pin
• (2) PCI Express 8-pin
• (2) PCI-E 8-pin to 6-pin adapters
• (8) Peripheral Molex
• (2) Peripheral FDD
• (8) Serial ATA
• (1) 4-pin ATX extension cable

