I have I5 2500k, 16g ddr3 1600, gtx 470 2-way sli on asrock p67 extreme 4 gen3 mobo. I am experiencing less than optimal (to my standards) fps in wow and in bf3 and I am wondering if a cpu overclock to 4ghz and dual gtx 670's would be a significant upgrade
You don't have a bottleneck based on the hardware you've listed. What kind of PSU do you have? Make/model?
Is the problem only in multi-player with BF3?
Do single-player and co-op modes run great with BF3 for you?
From my own personal experience, online performance in BF3 multi-player went south after the early April update. Hasn't been the same since. Single-player and co-op run great. Before the April BF3 update, everything ran great; big maps, small maps, and up to 64 players in any without a hitch.
I run with the hardware in my signature and still can't count on running an entire session of BF3 without framerate drops into the 40s for sometimes a minute at a time on large maps with 64 players. It didn't used to be like this.
As far as WoW goes, I haven't played. Not sure on that one.