Ultra Quiet Coolers for Intel Socket 1156 The Alpine 11 Pro Rev 2 is multi-compatible to the new socket 1156 as well as to the existing socket 775 It is the perfect cooling solution for PCs based on the the existing CPUs with the option to upgrade at any time Designed for silent-enthusiasts & system builders – Alpine 11 Pro The Alpine 11 Pro is for users who look for an extremely quiet high performance & easy-to-install cooling solution The Alpine 11 Pro features a more sophisticated acoustic design than the stock cooler Thanks to the patented vibration absorption & fan holder the cooler is barely audible – only 04 Sone at 2000 rpm – a standard that the stock cooler cannot compete With a 92mm PWM fan & a bigger heatsink design the maximum cooling capacity of the Alpine 11 Pro achieves 95 Watts Moreover the unique mounting system is very user-friendly & provides an absolutely transport safe solution The cooler is fastened by screws no back plate is necessary nor has the mainboard to be disassembled The whole installation can be done in less than a minute This is a totally peace of mind solution for Intel users