I have always been reading that Nvidia cards seems to have some kind of "compatibility" issues with FFXIV. The card looks decent and should run fine, especially given that yours is a GTX 770 it should have no problem going over 50FPS at max 1080p settings.

I can't tell for sure thou, I'm running a Radeon R9 290 OC. Haven't heard of FPS issues with Radeon cards for FFXIV.