GR is capped at 60, however with mipmapping i was going over 60fps. Normally i would stop at 60.
Here is a screenshot.
http://homepage.mac.com/farmerjeb/g5ghr.jpg (don't click if you have 56k)
AA runs slower than GHR, same with UT2k3. I average 30-40fps in AA in 1024x768 with settings on high. I run ghr at 1600x1200 on all high with mipmapping and it stays at 60fps with drops to 40-50.
oh, btw ghr runs faster in panther, because i can play itunes while playing ghr and stay at 50-60fps, when before i dropped to 30-40fps.