1) depends what card you get.
2) i am not sure about this, but there was a similar question like this elsewhere regarding a q6600.
Graphics Performance List
Originally Posted by Oreo
Oh random question 'cus i dont want to make a whole new thread about it;
Would you expect a Q9550 @ 3.7ghz to be a bottleneck for my GTX 470 thats on its way ? And my friend just ordered a GTX 470 too, but only has a Q660 @ 2.6ghz, so what about for him too ?
I googled this stuff but theirs nothing definitive out there.
Originally Posted by Apokalipse
the Q6600 at 2.6 might bottleneck the 470
Originally Posted by Baez
A little bit. That architecture is showing its age now and anything less than a Q9xxx series will slow cards higher than the GTX 295. Not a substantial amount, but still a bit of a bottleneck.
so i guess if the new card you're looking is of similar or greater performance to a gtx 470, then your cpu will be somewhat of small a bottleneck.