With Zalman's patented VFP (Variable Fin Profile) Fin Design, it maximizes cooling efficiency and dissipation surface area for excellent performance. As VNF100 is fanless, it does not emit any noise and can be used semi-permanently. Coming with 3 high performance heatpipes, it maximizes heat transfer. The thin aluminium fins (0.4mm) provide minimized heatsink weight, and prevents excessive force on the VGA card. More importantly, the heatsink is positioned above the VGA card that optimizes cooling efficiency and allows compatibility with CrossFire setups.