i keep always remember a long time ago it was said ea had battlefield 3 running at pc high settings 1080p, 30 fps on durango. this was in context of durango not necessarily being as powerful as wanted.
i look at crysis 2 which runs well on my 4890 rig, at high or highest settings mostly 30 fps, it should look fantastic on durango. ditto bf3, which my 4890 can also surprisingly actually run at mostly ultra settings 30 fps campaign.
just those facts actually make me pretty damn excited for durango. considering how shit optimized pc games are. throw in a 8 core cpu and 5gb ram, the rest of the specs are there too.
my 4890 is 800 shaders factory overclocked to 925 mhz i think, but the roughly 7770 in durango should easily outpower it due to gcn. and have tesselation, etc.
your 4890 is quite an old dx 10 card. If you take the same $300-$400 and buy a new video card in the fall do you not think that battlefield 3 and crisis 2 will run better on it than Durango ?