I've found tech specs for the AXP-140 (http://www.thermalright.com/products...at_id=27&id=99) and it fits easily with any RAM on the Asus P8H67-I I'm going to use. The PCI-E slot is fine too.
However I want to use the Cogage MST-140 instead but can't find accurate measurements of it anywhere. Is it exactly the same size and clearance?