Originally Posted by Kinaesthetic
Its already been told to you. Your FPS is bad at quad SLI level purely because your CPU is one ultra, gigantic bottleneck. Not even 5+Ghz on that CPU will make up for its severe lack of "per core" power.
And FFXIV:ARR is a single threaded program if I'm not mistaken, and thus, your FX-8350 is going to severely limit your GPUs in that case, with only multi-threaded games having less of a bottleneck (but still a pretty severe one).
And in terms of FFXIV:ARR, its SLI profile is perfectly solid, and fine with quad SLI. So yeah, upgrade your CPU to something substantial. Those dual GTX 590s are still incredibly solid cards.
Oh, and the whole thing about Furmark wasn't really towards you. It was towards the absolutely horrible advice/askance that nz3777 asked earlier in this thread of you. He has a terrible fixation on that program. And considering the VRMs on the GTX 590, you could easily start a house fire with that program, or at the least kill both of your cards. What coachmark2 said about it is very much the reality of that program, and who knows down the line that a new user might see this thread. And when he sees the replies about Furmark, he/she'll realize that it is a piece of garbage code that should be deleted off the internet.
This website exists to help not only you, but anyone else who might browse this thread (or google search it since Google's crawler does a damn solid job indexing this website's entries)