This fan-heatsink works with the following processors: Intel Core i 7-5820K, i 7-5930K, & i 7-5960X Processor (LGA2011-v 3 socket) Intel Core i 7-4820K, i 7-4930K, & i 7-4960X Processor (LGA2011 socket) Intel Core i 7-3820, i 7-3930K, & i 7-3960X Processor (LGA2011 socket) This fan-heatsink does not adequately cool the Intel Core i 7-3970X Processor which has a thermal design power (TDP) of 150W.