nope, all the 64mb cards run about the same, but how they are built determines the overclockability, like on my card the ram overclock is not great, some people can get 600+ but I can only get around 580-585, but in the chip side I have not seen an air cooled card run at 340-345 like mine does, best I have seen is 320. So in fact every card and every revision from different manufactureres is allot different. The frist A2 card from pny sucked crap with a max overclock of around 285 and 570, with my A3 revisioned chip I run 340/580 on everything with 0 probs latest 3d mark is 11272.
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