There a whole heap of partners that work with AMD to manufacture graphics cards and with the release of the 7790, I've looked at a card from virtually every major player in the market. It's very rare that this happens to be quite honest as I typically only see three or four cards at a time for each class of card but there's nothing wrong in breaking the mould a little and overall getting one of the most extensive data sets for Bonaire going.
PowerColor is a partner that I've not worked before, but this is not to say that their product is not worth looking at. The then ATI partner, who are owned by TUL, have been producing cards since 1997 and in some respects are a little unheard of these days when compared to the big names such as Asus and Gigabyte to name a few and be-known to some have also produced cards from NVIDIA, although this was done under the Zogis brand name.
With the release of the 7790, like may other partners, we see more than one SKU appear on the market by the brand with two slightly different overclock variants in that. The TurboDuo that I'm going to look over today is the faster and in a way, the better of the two, with a better cooling option and also a higher clock speed out of the box, but the real question is how does it stack up when pitted against the armada of 7790's that I've already seen and tested.
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