1280x1024... But that's with 6xAA and 16xAF, so it's running a bit slow even on my Radoen 9700 Pro. I'd like to see if I reduce AA to 2x and AF to 8x performance, how 1600x1200 performs.
The issue here is not my videocard, but my tired old CPU.
I had planned to upgrade the whole bloody machine in time for DooM 3, but now the Radeon X800 XT PE, which SHOULD have been available in MAY, now might not show up in large quantities until OCTOBER, and forget about the PCI-Express version, which means I can't go for that new Shuttle XPC because it has a PCI-Express slot. So now I'm thinking it'll have to be some other Shuttle XPC with an AGP slot... and that will have to wait on the X800 XT PE. Blast.