7750/6670 with E7600 core 2 duo?

Trave

Honorable
May 22, 2013
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So my dad got this optiplex 780 from his office for like $80(Php.50=$1) so just wanted make this pc give all it can do,and
so far 7750 and 6670 are the best gpu that i can get for this system.

So will 7750/6670 bottleneck in my CPU?

I think 7750 is better than the 6670.

So should I get 6670 cause 7750 will bottleneck my cpu or get 7750?