How do these two CPU coolers compare? I'll probably get a Ninja for the gaming system, and put the 4400+ CPU heatpipe cooler in my htpc (replace the standard non heatpipe AMD HSF on the 3700+ retail. The alternative HSF for the HTPC is the Zalman 7000B. The AMD cooler has heatpipes, wheras the Zalman does not. How would the two compare for cooling performance and noise?