anybody here uses the GTX 670?

[Sokol1]

I think in buy one GTX 670, but in this "corner of the world" those things are expensive, equivalent to ~700U$.

My doubt is: which is the "smaller" processor I can use with it that does not become the bottleneck. Ie. i3 2120 - 3.3 GHZ - 2 core (~175U$ here) is enough?

I dont consider overclock processor's (K) due to the cost involved, greater than the gains.

Sokol1