I just built a new rig and got a 670 too (GIGABYTE GV-N670OC-2GD GeForce GTX 670 2GB 256-bit GDDR5 PCI Express 3.0 x16 HDCP Ready SLI Support Video Card).
I have been struggling this weekend with trying to get this thing to work. I can login and move around but when ever a large graphical spell or ability is done the driver crashes and recovers which kicks me out of FFXI back into Pol.
Ive tried drivers 301.25, 301.34 and the latest 301.42 plus even the dev version 302.59 with no luck.
I have also tried all/any settings in the Nvidia control panel, directx 8, 9 & 11 checks, reinstalled FFXI and Win7 64 (with everything up to date). Disabled windows aero, bios tweaks, hardware check like DDR Ram sticks, psu, mobo connections etc etc.
Brand new rig with the best everything from i7-3960 extreme, 1200 certified psu, top of the line everything compatible hardware.
Extensive online search and reading shows no solution (even for FFXIV) and im already sick of it.
My old rig with ATI HD 4870x2 ran FFXI/FFXIV just fine.
I should of stuck with ATI and already ordered one on it's way.
MSI R7970 Lightning Radeon HD 7970 3GB 384-bit GDDR5 PCI Express 3.0 x16 HDCP Ready CrossFireX Support Video Card.
BTW, all other games like GTA4 run super smooth on the highest settings with the gtx 670.
Edited, May 27th 2012 4:06pm by Illicious
One day maybe: