Would there be a big difference going from an e8500 to an i7 920 or 940 in FSX? I currently run:e8500 OC'ed to 3.8ASUS P5Q4GB G-skill DDR3 1066 (PC2 8500) Dual ChannelEVGA 9800x2500GB WD Caviar (Vista64 & FS9)300GB WD Raptor (FSX)500GB WD MyBook (Storage)*Sound max - onboardI was thinking:i7 920 or 940 (Possible OC?)EVGA X58 1366CORSAIR DOMINATOR DDR3 1600 (PC3 12800) Triple Channel EVGA 9800x2300GB WD Caviar (Vista64 & FS9)*300GB WD Raptor (FSX)500GB WD Caviar (Storage)OnboardIs it worth it? or is there something I should do different within reason of course :( *The drive change is because my external (MyBook) has passed on, I have a Caviar 300 sitting around waiting for work.

Or how about just upgrading my current CPU to an Q9650?

Take a look at this thread. You are really in 'bout the same boat: http://forums1.avsim.net/index.php?showtopic=245102