OK I'm trying to decide between TR HR-01-X and TR Ultima-90.

Their cost is roughly equal so I'm mostly concerned with their features. From what I've read, the HR-01-X seems better at cooling (~3D Cel at load), which makes sense since it's bigger. On the other hand, the Ultima-90 is lighter and shorter, which means it puts less stress on the mobo and tray, especially when the mobo is positioned vertically in a tower or moved around. I plan on buying a case with the proper standoffs, but it still seems that the size of HR-01-X may be a factor.

Jcool, how wide are the fins on the Alpenföhn Ötzi? The specs say the base is 37mm wide but they don't mention the fins, which are usually less wide.