Scythe's Rasetsu heatsink stands out because of a mixture of acute and obtuse isosceles triangular voids cut into the leading and trailing edges of the heatsinks aluminum fins. It's a technique Scythe label the "Trident Multi Layer Fin Structure" and the point of it is to maximize air intake volume. More on this is a moment, as it's impossible to explain clearly without accompanying photographs...
Any major computer upgrade generally requires a full software reinstall too. No so if you heed the advice in the guide to Upgrading a Motherboard without Reinstalling. PCSTATS Tips