Guild Wars 2

Hey guys i just came back home.Thanks for all the responses.
I have a 4 year old silverstone 650w psu capable of delivering 54A on a single 12 rail.
My 680 runs on dual 8pin connectors but is overclocked on stock voltage.I also have 16gigs of overclocked RAM and i plan to add 16 more next month.In addition to that i’ve got a corsair h100i,5 led case fans(+2 more on the radiator),an ssd, a blue ray drive,2WD Black HDDs(1TB,2TB) and another 3 2.5" hdds i had lying around.Plus i will be getting a GTX Titan soon.
Not to mention that the capacitors inside the psu have started to age and the fact that it has been through a lot.(suicide i7 920 overclocks among other)
So yeah this psu is barely enough for what i have.
Anyways i guess i am going to have to live with this.I am going to try downsampling the game from 3820×2160 where the cpu barely matters.

Alright i started playing Guild Wars 2 yesterday.I run the game completely maxed out at 2560×1440.Most of the time i get a stable 60fps,except certain big fights where the fps drops to 30-40.During the behemoth fight the fps went as low as 22 witch i consider completely unplayable.
Now i noticed that the gpu usage is not at 99% when the fps drops,come of think of it it’s never at 99% witch indicates a cpu bottleneck.
My specs are the following:
i7 3930k@4ghz(not much of an oc but i can’t push it further till i get a new psu)
GTX 680 Lightning@1202Mhz(core)-7308Mhz(memory)
16GB of RAM
I am pretty sure i shouldn’t be getting those frame rates with this system,especially when the graphics don’t even look that good.