Very nice... yeah, the mounting pressure & extra fins as copper instead of all aluminum are the differences on those two, makes a difference though I gather from Hardwarecanucks review offhand :up: .
EDIT: Looks like mounting holes are different and require adapter for most heatsinks? http://www.overclock.net/intel-mothe...therboard.html Xigmatech S1283 I have doesn't look like it would work then... :(. Downloading the UD5 manual but it's going quite slowly ;).
EDIT2: Looks like 1156 bracket would work for me... for mounting to the P67A-UD5: http://www.newegg.com/Product/Produc...82E16835233038 am I correct? :) (Gigabyte manual still hasn't finished!)