The heatsink is tightened to the video via 6 mounting holes/screws, install takes only few seconds and can be compared with the installation of the standard 8800 heatsinks. As I've told you on previous page, the GPU, memory and NVIO chip are being cooled by a nearly full cover heatsink. The memory chips need thick thermal pads in order to get decent thermal contact with the heatsink base, for the NVIO chip Arctic Cooling added a thinner thermal pad. Unfortunately, the NVIO thermal pad was made too thin and I noticed how it did not even touch the large heatsink base.
I contacted Arctic Cooling and it seems this is a known issue with early review samples, they forwarded me with 2 new pads and those worked out just great. Just to be clear, retail samples will not have this issue. The installed heatsink will add light pressure to the thermal pads which makes sure that you'll never loose them during the heaviest operations.