I tested it on two (sperate, non-dual) AMD systems:
1.4 GHz Athlon Thunderbird
AMD Athlon(tm) XP 2100+, ~1.7GHz
But running Win 98SE and Win2KPro (respectively) natively, not using VMWare. No problems to report in general. But I also did not test the server timer for accuracy versus real-world time.
Well you have to keep in mind that the actual hardware running the Dom3 game is virtual hardware provided by VMware. Everything is emulated... so unless it was tested on a Virtual Machine, it won't matter.