Mushkin 998770 DDR3 UDIMM (3x4GB) 12GB PC3-10666 9-9-9-24 STILETTO 1.5V Upgrade to high performance and cut down the heat! The Stiletto heatsink by Mushkin Enhanced allows for an upgrade to better performance without a huge investment. Achieve faster and fresher response, increased stability, and an overall more enjoyable performance from your system by installing modules equipped with Stiletto. Compatible Frequency This product is engineered to operate at the optimum frequency for compatibility with your system. Compatible Timings This product is programmed to use timings that offer maximum compatibility with your system and original memory. Triple Channel Kit Engineered for triple-channel architecture. Lifetime Warranty Quality guaranteed - we offer a lifetime warranty on this product and genuine, unmatched service and support. Stiletto Heatsink This product is equipped with the Stiletto Heatsink. Type: DDR3 Voltage: 1.5V Speed Spec: PC3-10666 Frequency: 1333MHz Capacity Kit Type: Triple Kit Module Size: 4GB Timings tCL: 9 tRCD: 9 tRP: 9 tRAS: 24 Cooling Technology Heatsink: Stiletto