I've decided on everything besides the GPU. I can afford the XFX Radeon R9 280X 3GB Black Edition Double Dissipation ($225), but it won't fit in the tower I chose without blocking certain drivebays, Thermaltake Commander G41 ATX Mid Tower. I then saw the EVGA GeForce GTX 660 3GB (03G-P4-2667-KR) for $150. I also saw that the 280x doesn't include Ambient Occlusion, Anti Aliasing, Anisotropic Filtering, Motion Blur, etc. Is this true? Should I get the 660, or is it too dated? Or will the R9 280x not be a problem, and do I need to worry about it blocking the drive bays?