I'm running my current system (in sig) with a C2D E8500 @ 4.0 (though I'm pretty certain I can push it farther on air) and I was wondering if upgrading to a i7 and hopefully pushing it to the 4.0 mark would be a worthy upgrade. I don't use my system for anything TOO intensive other than the occasional audio editing and converting, gaming (though I've been playing Starcraft more than anything lately), and some Photoshop. Other than that it's just everyday tasks. Let me know what you guys think and what kind of performance increases you've experienced. 