Best OC-able GTX 680 (max of 480€/640$)

HyperX

Honorable
Nov 18, 2012
19
0
10,510
As the title says, what is the best OC-able GTX 680?

My Budget is about 480€ or 640 US$.

I would like a quite silent card which is OC about 1,3 GHz core clock.
 

HyperX

Honorable
Nov 18, 2012
19
0
10,510
I forgot to say I need this OC for a single card 3-Screen gaming PC.

BF on Ultra 5760x1020 with a normal GTX 680 is about 30 FPS, so I want to get an OC-able one to get a bonus of 5 to 10 fps :)