I, myself have been using an AIO kit since I saw how much cleaner a rig looks with one compared to typical heat sinks. Corsair has released several AIO units in the past few years which would include the H40, H50, H60, H70, H80 and H100. Each has served many well but there is a time when technology advantages and change come. The H55 is the new kid on the block and looking to take the place of the H50 as the quiet cooler. One that someone would purchase to replace the stocker that comes in the box with your CPU."
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