The TweakTown guys take an X6800 & an E6700 & see just how far they can push them. Then they run 'em through a bunch of gaming benchmarks so's you can see just what kind of performance advantage you'd get out of an overclocked Conroe.

"Core 2 is simply the answer to all our processor prayers. Not only does Core 2 show a good overclocking curve, even from these early samples we have, but the amount of heat generated per MHz over its default is less than half of what the Pentium 4 generated."