Seasonic X-Series 850 W Power Supply Review

Hardware Secrets Golden Award


Like all other X-Series units from Seasonic we’ve reviewed so far, the X-Series 850 W power supply is an impressive product, with extremely high efficiency (above 90%), 3% voltage regulation (i.e., voltages closer to their nominal value than necessary), and extremely low noise and ripple levels. On top of that, due to its highly overspec’ed components, we could easily pull 1,000 W from it.

The main “problem” with this power supply is its price. Two hundred dollars is a lot of money for the average user, but this product is definitely targeted to users that demand “the best of the best” and is willing to pay for it.

A minor issue with this product, in our opinion, is the relatively reduced number of SATA power connectors (eight), especially when there are some high-end 850 W units out there offering 12 of them. It would also be nice if the manufacturer had added six video card power connectors instead of “only” four, which would allow us to install three high-end video cards together without the need of adapters.

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Author: Gabriel Torres

Gabriel Torres is a Brazilian best-selling ICT expert, with 24 books published. He started his online career in 1996, when he launched Clube do Hardware, which is one of the oldest and largest websites about technology in Brazil. He created Hardware Secrets in 1999 to expand his knowledge outside his home country.

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