Just got word that Alex's has posted his P4 Cooler Roundup up. Here's what he's saying.

Modern day CPUs are capable of producing more heat than my toaster. Because of this, CPU coolers are necessary to prevent your $300 CPU from frying like the eggs I had for breakfast this morning (no, my eggs aren't hard boiled). Without proper cooling, a CPU could easily burn out in less than ten seconds. P4 Cooler Roundup