In order for you to play RIFT on Windows with minimal graphics settings, your computer must meet the following requirements
OS *:
Windows XP, Vista or 7
Processor (CPU):
Dual Core 2.0 GHz or better
Memory (RAM):
2 GB
Graphics Card:
Nvidia GeForce FX 5900, ATI/AMD Radeon X300, Intel GMA X4500 or better.
DirectX®:
9.0c, June 2010 update
Hard Drive:
15.0 GB available
Sound:
DirectX 8.1 compliant card
Other: Broadband internet connection (DSL, cable modem or other high speed connection)