I was just over @ Digit-life.com checking out what's new and I spotted their ATI Radeon 9800 PRO 128MB review! After a quick read, I noticed they've done some DOOM III (alpha) Benchmarking using ATI's and Nvidia's latest graphics cards the Radeon 9800 Pro and Geforce FX 5800 Ultra! This gives you a comparison of what these next generation cards can do when DOOM III finally hits the stores. Keep in mind it's earlier alpha and a lot will change till final release.
And for all you modding boys and girls out there, they've done some Soft 9800 PRO benching! That's using your Radeon 9700 pro with Unwinder's SoftR9x00 scripts.
Radeon 9800 Pro - GeForce FX 5800 Ultra DOOM III Benchmarks
Radeon 9800 Pro - GeForce FX 5800 Ultra DOOM III Benchmarks