i guess thats a bit important lol anyway
my cpu is at 3.2
and i use it mostly for gaming but also for some photo editing and random browsing word processing etc.
If you feel the PC is slow, then go ahead and upgrade...As far as I can see, your PC specs dont look bad...
If you can, I would suggest you wait till Jan...though Intel has already launched newer CPUs, there are more to come during Jan and the P55 chipset is still new...So by Jan, those chipset drivers would become better...
And anyways you can even expect Nvidia to launch newer cards by then...So that would force ATI to reduce their DirectX 11 card prices...And also there is lot of time for DirectX 11 to become mainstream...When new DirectX 11 games start to roll out, that would be a better time...
But if you still want to go ahead and upgrade then its your choice...