Quote Originally Posted by Particle View Post
Heh. It doesn't work that way. It uses all four (three of which it uses quite a bit). You can't jumble the math any way you want it and say something like "If you add it up, you can see that it only uses one core at 270%." I'd also like to point out that three cores stay around 75% and the forth at 25% which averages a bit closer to three fully loaded cores instead of two if you do still want to look at it that way.
Yeah well, it all depends on how much one process stays on one core if one can do the math like that or not. For example, on most dual core setups when running an application of only single thread, the two cores usually (not always) average around 50% each.

And, my estimate what not entirely accurate, I just pointed out that it might not take use of all cores. Nevertheless it uses them nicely.

FSX is sometimes still a bit slow to respond, but after SP1 and SP2 it has improved a lot. I don't play it that often though.