You are assuming that the GTX7xx is actually going to come out in February, which I doubt and if it does it took the GTX480 a while to sell through current inventory and it dropped in price once the HD6xxx hit the market, so I am not sure why anyone think this will be different. At $500 - $600 you would be foolish to get a GTX580 with the HD7970 on the market at the same price with better performance.
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