When it comes to the absolute best when balancing price and
performance, a few units come to mind, among them Corsair's TX750W was
definitely among those at the front of the pack. Today we add Corsair's
TX850W to that list. The 850W priced in the lower $100 dollar range and only
slightly more expensive than the TX750W falls in a sweet spot. For those
needing just a little bit more power than the TX750W offers, but not a full
1000W, the TX850W answers the call. Even those who don't necessarily need
850W of power should consider the TX850W. There are only a small number of
units which match Corsair's TX line offerings in terms of performance and
especially at its asking price point.

http://www.overclockersonline.net/in...icles&num=2731