[throwawayish]

> Intel's quad cores are only really required for the pro Counter-Strike players who want 600fps at 1080p just to get the absolute latest frame.

The source engine isn't exactly the pinnacle of engine development.

It doesn't really know what to with more than 2ish cores, so you probably get more FPS by using a dual core instead of a quad core, which tend to go farther in terms of overclocking.