Hmm.. i play on:
Core2Duo E6550 oc to 2,8
4gb DDR2 800mhz
9600 GT 1GB GDD3 with 700mhz on core and 2000mhz on memory
Shit pc but in mor-dhona or gold saucer in peak hours i got around 15fps......i think earlier that PS4 got more horse power and even consider to buy PS4 to play FFXIV rather than upgrading PC but now idk :/