x1400 512mb is'nt bad...
...but anywho, today is a good day. I got my graphics card ALREADY - just two days!! That's even better than NewEgg would have got it to me. Good stuff. The card is a monster. It's huge and heavy, and capable of making really high pitched whining noises if you adjust it a little, just like Puncharger.
As for Mirror's Edge, well, I can't run it right now. My guess is that because my graphics settings were set to settings from my Nvidia 8800gt 512mb, and since I had turned on "Physx" support, a "Nvidia-only feature unless you have a Physx card, it won't start. It does the main intro but crashes before the main menu - where the setting can be changed. Gotta reinstall.
But I will say, so far... this thing is rape. I will upload a picture later and maybe a video if someone tells me how to compress it well because the video file sizes are huge with FRAPS right now. I may even do a little audio commentary.
For now, look at how badly I RAPE Grand Theft Auto 4 now

Here's the benchmark stats
Statistics
Average FPS: 63.70
Duration: 37.20 sec
CPU Usage: 62%
System memory usage: 39%
Video memory usage: 96%
Graphics Settings
Video Mode: 1600 x 1200 (70 Hz)
Texture Quality: High
Texture Filter Quality: Very High
View Distance: 30
Detail Distance: 45
Hardware
Microsoft Windows 7 Ultimate
Microsoft Windows 7 Ultimate
Video Adapter: ATI Radeon HD 4800 Series
Video Driver version: 8.14.10.697
Audio Adapter: Speakers (High Definition Audio Device)
AMD Phenom(tm) II X4 B50 Processor