3D Studio Max 2
This benchmark is already a classic here at Tom's Hardware. While it used to be ruled by Intel processors in the past, it's now dominated by Athlons. The FPU of Pentium III doesn't have the slightest chance against any of the AMD processors.
If you are into 3D-modelling you might want to have a look at this chart, although it doesn't tell the whole truth. SMP systems could score particularly well here, especially systems equipped with two inexpensive processors. Intel's processors are obviously the only x86 SMP-solution for the time being, as long as AMD is still not offering SMP-platforms for Athlon.