Zalman CNPS 5700D-Cu

"...under ideal conditions this concept should equate to an overall increase in cooling capability which is very cool indeed."

"If you're using the stock Intel heatsink and you're keeping under 70 degrees with a healthy overclock, I'm leaning towards the keep-your-wallet-in-your-pants technique. On the other hand, if you somehow got stuck with a lame-ass OEM cooler, or you're looking for a cool heatsink (in more ways than one) that you can change fans on (you could slap a nifty LED fan on the 5700 if you'd like), then Zalman's baby may just fit the bill."

"...it cools extremely efficiently at negligible noise levels and it is arguably one of the best if not the best cooling solution for any P4."