The first thing you'll notice about this heatsink is it's big. This provided a bit of a problem for me in that I have an Asus A7N8X Deluxe motherboard which I dearly love. It is so crammed with extras that there wasn't much room to work with on the install. I eventually broke down, removed the motherboard and the sink installed in a snap. This was because in my PC75 the chip placement means there was only about an inch of clearance between the bottom of the power supply and the base of the heatsink. I didn't feel this was worth the risk of cracking the chip and after a couple of tries I removed the motherboard. The thumb clip was a breeze and the motherboard was installed and it was all running in less than an hour total.