AMDZone has initial benchmarks with their own custom multiplayer demo from Quake 4 with an Athlon 64 X2 and Radeon X850XT PE.
We have been Quake players since the first test came out, and it has been too long since Quake 3. While we have played just a few hours of Quake 4 multiplayer it is too early to comment on too much. While the DM17 conversion is not to our liking game play seems ok so far, but we have yet to get into a zone with the rail gun likely because our settings still need to be tweaked. What we do have is a first look at performance using the following hardware.