Cooler Master Hyper 612 - CPU Cooler with Aluminum Fins and 6 Heat Pipes (RR-H612-20PK-R3) Optimized with wider fin gaps and resistance reduction cut-offs for low fan speed condition. Unconventional layout of the heatpipe direction: all 6 heat pipes can cross over the "hot zone" on most of the modern CPUs for better cooling efficiency. Quick-snap fan bracket design for easier installation. Wide range PWM fan (600 - 2000 R.P.M.) provides versatile performance for full loading efficiency and for quiet idling. Compatible CPU Sockets - Intel: LGA 2011/1366/1156/1155/775 and AMD: FM1/FM2/AM3+ AMD: Phenom II X4/Phenom II X3/Phenom II X2/Phenom X4/Phenom X3/Athlon II X4/Athlon II X3/Athlon II X2/Athlon X2/Athlon/Sempron/A Series Intel: Core i7 Extreme/Core i7/Core i5/Core i3/Core2 Extreme/Core2 Quad/Core2 Duo/Pentium/Celeron