39 700-850W power supplies review: power for your Skylake-X or Threadripper

High-end power supplies for high-end desktops



The performance of all of the tested power supplies are good or very good across the board. The Be quiet! Pure Power 9 CM 700W and the Cooler Master MasterWatt Lite 700W drop down a little bit too far with their voltage on the 12 volt rail at high load, but for everything else all of the power supplies show good results when it comes to the basic tests. This means that we have to look at the details when we want to choose the winners of this test. 

If you are looking for a relatively inexpensive power supply, the old but trusted Cooler Master GM Series G750M remains a good choice. This power supply which was introduced in 2014 offers excellent performance, is relatively quiet and has an average price that is slightly below 79 pounds / 90 euros, which is why this product receives a Great Value award. If you want to spend a little bit more, the new Seasonic Focus Gold power supplies are an excellent choice. With average prices of respectively 92 pounds / 105 euros and 101 pounds / 115 euros for the 750W and 850W models these power supplies offer excellent performance in every regard and are also completely modular, which means that you can choose the right cables for your system. This is why both Seasonic Focus Gold power supplies receive our Excellent Choice award. The Corsair RM750x and the EVGA Supernova GQ 750W receive the same award. These power supplies are also quiet, completely modular and offer excellent performance for less than 132 pounds / 150 euros. 

You can find the best performance by looking at the Be quiet! Dark Power Pro 11 850W, Corsair RM750i and RM850i, RM850x, HX850 and HX850i, and the Seasonic Prime Gold, Platinum and Titanium models. All of these power supplies cost (a lot) more than 132 pounds / 150 euros, but in return offer excellent efficiency, very low ripple values and very low noise levels. If we do not look at their price, these are the best power supplies and with that they deserve our Ultimate Product award. 

Cooler Master GM Series G750M 750W

EVGA Supernova GQ 750W
Corsair RM750x
Seasonic Focus Plus Gold 750W

Seasonic Focus Plus Gold 850W

Be quiet! Dark Power Pro 11 850W
Corsair RM750i
Corsair RM850i
Corsair RM850x
Corsair HX850
Corsair HX850i
Seasonic Prime Gold 750W
Seasonic Prime Gold 850W
Seasonic Prime Platinum 750W
Seasonic Prime Platinum 850W
Seasonic Prime Titanium 750W
Seasonic Prime Titanium 850W


40 products discussed in this review

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