Both the P5W DH and M2N32-SLI are based on a black/brown PCB and feature passive cooling meaning you wont hear either of them producing any noise. Their cooling design differs a bit and from the looks of it, the nForce 590 probably gets hotter than the 975X chipset. On the M2N32-SLI, ASUS has installed four heatsinks, all of which are connected through heatpipes. Between the heatsinks on the MOSFETs and the Northbridge, there are two heatpipes while the Northbridge and Southbridge are connected using one heatpipe. On the other hand, the P5W DH has just one heatpipe that connects the heatsink on the Northbridge to the one on the MOSFET’s.



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