OK, 1090t is the way to go as it will give you very good overall system performance as well as plenty of gaming performance, it will not bottlekneck your 6950 at all, the 1090t is also a very good overclocker and with a cheap aftermarket cooler OCs of 4ghz are very common with this CPU, just make sure you buy an AM3+ board so its compatible with bulldozer on its release, and in the long term the 6950 will serve you much better than a 6870.