Best cpu for FSX?

[pieman109]

Having built a flight sim for the local air cadets to run FSX, I'm currently using the following:

E5200 @3.15ghz
4870 512mb
2 x 2gb Kingston pc8500
Win 7 (release candidate)
MSI Matx G31 chipset mobo.

Performance is a bit low so I'd like to improve it a fair bit if possible.

I reckon I need a better cpu/ mobo combination, so what do ppl here reckon would be a suitable cpu and mobo upgrade. I've read here that FSX loves high clocked cpus, but would a C2Quad give better performance than a C2D.
Cheers.

 

[pieman109]

Core I7 above all else....Quad core and 4ghz capable.

Its as good as you can get.....if you have the money.

That would be a nice system to use but a bit on the pricey side unfortunately. How does this sound?, e6600 @ 3.2ghz-3.4ghz, P45 mobo, 260GTX, XP pro instead of Win 7 (heard that performance is better on XP rather than vista or win 7). Cost wise I reckon I (or rather the commitee) can handle that.