ALL mmo's are generally more cpu hungry, especially when other pc's are around. used to run an amd set up, some 6750 hd card i believe. and a ga 970a d3 motherboard, with some amd fx-4100 cpu.
after dealing with crap from a lot of amd's drivers. nothing against em, i loved amd for a long time. refused to go with intel and nvidia set up, but i finally did.
anyway, i noticed my fps was pretty normal, and the game ran pretty well all the time on that set up, but only on minimum settings.
currently im running this
intel i5 4670k processor (i know its for overclocking, i've got a fan that's good enough for that. just in case i choose to oc. but mostly so i can leave my computer on, and literally never turn it off except when doing maintanence.)
z87 fatl1ty killer motherboard. (the pci 3.0 slots have had a huge impact over the 2.0 slots graphics wise compared to my ga-970a-d3, i love it.)
nvidia gtx 760 made by asus, there was a evga varient, which was enclosed and i said no, an msi varient, and a gigabyte variant, i probably would have gone with gigabyte's variant, but the freakin graphics card would have literally gone through my 1 TB internal hdd and my 4 TB internal harddrive. it's a huge gpu with like 3 fans, but the asus is less enclosed than the evga gpu's so, i like it. plus its about 30-40% better than a gtx 660 or 660 ti, and only 10 bucks more than a 660 ti. so i figured why not.
(this part is directed toward the op)
so far. you want a good cpu. i'd say something from the 3rd gen of intel's processors would be perfectly fine long as it's quad core and has about 3.0 ghz.
i don't know amd wise anymore. but you'd have to figure out what's equivalent.
either way, better graphics card probably wont make things much better.
i remember with tera online, i always had to run it on pretty crap settings cuz i didnt know this.
i was running with a gtx 660 and i still had to run on the same settings cuz my cpu just wasnt up to par.
but i run quite nearly literally everything at max graphics now. and it always runs well. even emulators for like gamecube and such run like a dream, which is very nice. (no more stuttering and no more choppy sound!)
now for the price of what i've got now...
cpu- 250 ish. (the non k variant, i.e. the one that isn't unlocked for overclocking i believe is around 220 atm, your choice though, both work well.)
motherboard- 140 ish.
gpu - 260 ish.
total - 650
also, i started out with my computer as a pre built, since i was too lazy to build my own, but now all the the parts minus the case are my own parts.
also, to rainemagus, i tend to run ssao on any game just fine, transparent lighting too, as you mentioned the 760, i havent run into issues with ssao or any of those variants, not that i really understand them well.
would this be due to my motherboard having pci 3.0 slots or in combo with my cpu, or possibly because i force my games to use my gpu for physx rather than auto selecting or using my cpu?