@Irinikus have you seen this smp patch for quake 3 (and other idtech engines)? Well worth a try on your dual cpu machines, it seems to give a significant boost to fps
We found a dual Cpu patch (SMP) that works on old games. \ VOGONS
I've just got my hands on a patched version of Quake 3 allowing it to operate in an SMP mode: (The Dual Pentium Pro setup isn't built yet so I'm running it on my Dual PIII build and am still running the GT 430 for now)
I now get: 151.1FPS with maximum settings @ 1024x768
In the past the system achieved a maximum of 103.2FPS with this setup using the same settings!!!
It gives the system a huge performance boost! (And also offers SMP for voodoo cards!)
You can download it from a link in the description of this YouTube video:
You just need to copy the Quake 3 PAK files into the baseq3 directory to get it up and running!