which would be better?

[Dimmy]

i dont really play any games that need DX11 but ATM i have CF xfx4850 (512mb)
and i have this Galaxy 465 laying here that a friend left not doing anything (because he deployed) so i was thinking of just sticking it in my comp, but would it be worth the trouble?
will there be any gains?

 

[samuelmorris]

Two 4850s are faster than a GTX465. Not by much, but they are slightly faster. They don't use any more power either. If you don't have any problems with crossfire, leave things as they are.