The FINAL FANTASY XIV Recommended System Requirements are now available (thanks Big Download), for some reason omitting the AMD/ATI counterparts for CPU and graphics. Here they are:

OS: Windows® 7 32-bit/64-bit*
CPU: Intel® Core™ i7 2.66GHz or higher
RAM: 4GB or more
HDD/SDD: Installation: 15GB of free space
Download: 6GB of free space on the drive containing "My Documents"
Graphics Card: NVIDIA® GeForce® GTX 460 or better with VRAM 768MB or more
Sound Card: DirectSound® compatible sound card (DirectX® 9.0c or higher)
Internet Connection: Broadband or better (always-on)
Resolution: 1280x720 (32-bit) or higher
DirectX®: DirectX® 9.0c
Others: Mouse, Keyboard, Gamepad

* On a 64-bit OS, the software will run via WOW64 ( Windows 32-bit On Windows 64-bit ).