It's getting to be quite a kerfuffle lately... these IQ stories, it was only days ago people were accusing AMD of IQ tampering and now it seems NVIDIA has been messing with their own IQ, but it seems a bit sneakier.
KitGuru has a lengthy article based on it - where HAWX is tested and when AA is used the IQ is lowered - giving an improvement in performance by 8%.
With the GTX460 doing so well and the 580 being a great GPU - it would be disappointing for NVIDIA to finally get back on their foot (not feet, they're not out of the woods yet) to have this stop them.
Check the source for the long read - it's quite interesting.
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