Got a Core i7 processor and is thinking of overclocking it, perhaps a bit more than the average person? Than you might want to look at the following article. Madshrimps has taken it upon themselves to test Core i7 940 with water cooling and has gathered seven water cooling blocks. They overclock the processor to 3.8GHz and then run some tests to see which handles the heat the best.
“Like always each article needs a small intro to answer some of the usual questions: Why, how, what,… I think you get the picture ( we reviewers know you readers are far smarter than us ) I’m the proud owner of a Nehalem based PC. It allows me to do awesome stuff at tremendous speeds. Nehalem is pure brute force and when overclocked requires a nuclear plant to power it. This goes along with big heat output. More heat than some air coolers can handle…”
Water blocks from EK, Enzotech, Koolance, OCZ, XSPC and Swiftech are thoroughly tested to see which is the best for you.