Currently in the process of building a computer, mostly to run FSX on, but I'm not sure which processor to get. I'm not looking for whatever's more futureproof (because I know NOTHING is futureproof), just whatever will run FSX the best. i5 750 is a quad core (no hyperthreading) @ 2.66 Ghz, while the i7-860 is a quad (has hyperthreading) at 2.8Ghz. Let's say the i5 is overclocked to 2.8Ghz, will it run FSX as fast as the i7 would? I've heard that the i7's hyperthreading wouldn't do anything for FSX, as FSX can't utilize it. So which is best?
FSX can and does use hyperthreading.Both of those CPU's will however run FSX well.The best and most common CPU's to use for FSX are the Core i7 920 or newer 930 model or the other higher end models up to the beefiest,best (and costliest)one of them all which would be the Core i7 980X.
Forum user Computronix is the expert about FSX on these forums.If you do a search (with his username) you will find his posts here.
Here is one link (where I linked a couple of his posts)
on this post forum user arthurh posted a nice link to a company which makes and sells FSX systems that shows the relative performances of components.
It seems to be fairly accurate although not comprehensive of many components.
It would have been nice to have more CPU's listed etc.