Using a high internal GSdx resolution is sort of like super-sampling AA. I'm running Persona 3 right now at 2048x2048.
E8400 @ 4.1 GHz
Asus P5K-E
4 GB G.Skill DDR2-1000
Radeon 4850 @ 700/1100
Vista Ultimate x64
Asus P5K-E
4 GB G.Skill DDR2-1000
Radeon 4850 @ 700/1100
Vista Ultimate x64