My problem is I have a 5970 which technically beats the new cards bar the 590 and 6990. But of course these cards are seen as sli/crossfire (two chips) and therefore cod doesn't use them to their full potential
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Luckily for me the pseudo full screen disables one of the chips and I still get 40-50 fps on the isle of doom map but the channel map online I only get ~30. Hopefully they will work on crossfire more at somepoint.