Hey everyone, I wanted to get the Thermalright XP-90 Aluminum heatsink because the XP-120 is too large, and too expansive for me, but I was wondering...what is the benefit of heatpipes exactly...I have a theory (transfers heat better?...) but I want to know for sure if it's worth the money. Second, this heatsink is aluminum, and supposedly copper is better...so I was wondering if this heatsink is just as good as regualr copper heatisnks? Please post comparisons, or any other heatsink suggestions for the same price as the Thermalright XP-90. Oh, and what fan should I use for good cooling with reletevily silent performence on the XP-90. Thanks guys, any help would be appreciated.