what a waste. we aren't even using all 4 cores we have now. they really should be trying to break the speed barriers instead of just upping the cores until apps and games are utilizing them. let's see some 4-6 ghz processors....then ill be impressed. or even better, since amd/ati has the crossfire going, maybe they could implement some sort of dual processor (ala crossfire) capability along the same line.
The fastest clock speed released by Intel or AMD to date was 3800MHz in a stock CPU. This was in 2005.
There is a very large number of factors driving the number of cores up and the clock speeds down.
If by crossfire with CPUs, do you mean ... dual socket? something that has been common place for almost 15 years? Way to be informed and keep up with technology.