GTX 670 underperforming

[peyman_tp]

Hello. I recently bought a new rig with

i5 3570k OC'd to 4.2 Ghz
Gigabyte GTX 670 WF2
Asus P8Z77-V LK
Kingston HyperX Genesis 8Gb RAM
Thermaltake SMART 750w PSU

and I have overclocked my gpu from its stock 1020 (boost clock)/1502 to 1160/1752. I have found my kepler boost to be a lowly 91Mhz, so I would be getting 1251Mhz under stress. I have good ventilation, and both my CPU and GPU run max at around 60C. However, I think my graphics card is not performing as good as it should be. I ran a heaven benchmark with my oc'd specs and I got 45.8 avg fps and my score was only 1153. is that normal for my system? Thanks

 

[cooldudesubho]

My gtx 670 get 54FPS all maxed out 8xaa extreme tesslation at 1600-900 res.Its running at stock speed.Check your framerate at that res at stock speed to compare.

And ROFL upload your screenshot to imageshack lol.