[Cichard]

basically you bottle neck is going to either be CPU or GPU and most likely you will hit the CPU bottle neck before anything. So a good multicore processor would be nice. but you have to be careful that you are getting a "true" multicore processor. some intel processors are 12 core but they are really 6 cores and 6 virtual cores. you cannot run a game on a virtual core. So in this 12 core set up you really have 6 cores to work with. so 8 accounts on this processor would look like this for core allocation.

Game core
1 1,2
2 3,4
3 5,6
4 7,8
5 9,10
6 11,12
7 1,2,3,4,5,6
8 7,8,9,10,11,12

this would give you a balanced load.

an 8 core amd procoessor is 8 physical cores. so you can actually run a game on all 8 cores

game core
1 1
2 2
3 3
4 4
5 5
6 6
7 7
8 8