Thermaltake ToughPower Grand 850W Power Supply Review

The Bottom Line:


Please click on thumbnails for larger images.

You will notice that the PSU is slightly longer than your standard pedestrian PC PSU.  It did not create fit issues in any of the 3 chassis I tried it in.  On the bottom is a massive 140mm fan, with a unique “flower petal” fan blade design.  They claim that it’s patented, and reduces noise.  I did not confirm the patent, but the device runs very quietly.  This unit is packed with amps as we can see on the right image.  71A on the 12V rail.Testing:Testing was done with the following test setup:CPU: Intel Core i7 860 @ 2.8GHzMotherboard: Asus P8P64 PRO Rev 3.1RAM: Kingston 8GB DDR3HDD: WD 1TB 7200 RPM x 4Videocard:  ATI Radeon HD 5700Testing was done by looping SuperPi , Starcraft, and copying a 200GB folder concurrently.  We also utilized the Thermaltake Dr. Power II to register the voltage characteristics under simulated load. Throw whatever we could at this, and the PSU never batted an eye.  Even with the CPU saturated, and all of the fans cranked up to max this thing never skipped a beat.

Deviation on all rails stayed within .1 volt under the simulated, and real world loads. While we are not able to really overwhelm this PSU with the test rig thrown at it, it instills confidence that we couldnt even register a >.1 deviation while spinning up 4 drives and throwing the GPU load at it.  I would say outside of a space heater, you are just not going to saturate this.Overall give this device serious consideration.  It’s a contender, and quick forum looks indicate some users stretching this thing reliably closer to 1KW.  Pair that with a 7 year OEM warranty on a high failure rate device and you’ve got an absolute prize.  It’s somewhat pricey, yes.  But you are getting the king in this range.

+ Beautiful design, packaging, accessories
+ Accessories+ Modular
+ Extremely Stable
+ Low noise
+ Lots of overhead
+93% Efficiency, 80PLUS Gold


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