Tom's Hardware Guide First Look: TriGem's Kloss KL-I915a: Power Aplenty and Almost No Noise - Nothing's Easy In The Beginning. If you have to have the latest Prescott from Intel, here's a small form factor machine that actually handles it well. It uses a special design where the motherboard is in the middle, so the 110 watts (wow!) of heat from a 3.6GHz Pentium blows up and the rest of the system is separated in the cool area below.
Not a bad solution to an ultrahot processor.