When looking this heatsink over I noticed a couple of things that the Ultra Fire 775 had in common with the Intel heatsink. The fin design is the same but with different copper cores. The Ultra is a bit taller but the overall radius is the same. Intel's mounting clips are the push pin and lock type that can have problems if you remove and reuse the pins more than a couple of times. The strong point for the Intel heatsink is the fan, an 80 mm fan that runs virtually silent. Unfortunately this is not good enough to run any serious OC.



Link: Pimprig