I'm thinking of upgrading my computer this year to a Core i7 870 w/Turbo Boost, and I'm wondering whether running FSX will affect the speed I can get with it? For example, the max speed for the Core i7 870 w/Turbo Boost is 3.6 GHz, but that's just for one core. FSX will use all available cores as of SP2, so I don't know a way of telling it I only want to use 1-2 cores because it would limit the speed I can get with Turbo Boost.
I know most people would overclock their system, but with Turbo Boost, this is basically a tool which overclocks it for you if you don't want to take any risks. Only goes up to the maximum thermal limit. Might not hit 3.6 GHz, depending on my hardware. Never tried it. Don't really feel comfortable doing it myself. I keep hearing that the Core i7's overclock very well. I currently have a Core 2 Quad Q9550, and I could only get it up to 3 GHz (temp was at 65 C with an third party cooler, so I put it back to normal). I have an Arctic Freezer 7 Pro and four 120mm case fans which is pretty good.
So is there any way to tell FSX to use 2 cores max without limiting my clock speed?