Well I feel sorry for you that it's quite low on today standards. You can get some 6670s by the way, the best low-end card which rarely will bottleneck Core 2s. Here:
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Ya the 6670 is the highest size card you can go to and not really get into bottlenecking. Maybe on some games you might get a little BN. Your CPU Core 2s just would not keep up with a higher graphic card. Good Luck To Ya
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