Thought I'd post my specs to accompany my post in the introduction thread.
Desktop PC
Device name: ATI Radeon HD 4600 Series
Pixel shader: 3
Estimated VRAM: 2809 MB
Motion blur: Yes
Laptop
Device Name: ATI Mobility Radeon HD 4570
Pixel Shader: 3
Estimated VRAM: 1769 MB
Motion Blur: Yes