Mushkin 991755 DDR2 UDIMM 1GB PC2-5300 5-5-5-15 STILETTO 1.8V Upgrade to high performance and cut down the heat! The Stilettoâ"¢ 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 Stilettoâ"¢. * 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. * 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 Stilettoâ"¢ Heatsink. Product Specifications: Type: DDR2 Voltage: 1.8V Speed Spec: PC2-5300 Frequency: 667MHz Capacity Kit Type: Module Module Size: 1GB Timings tCL: 5 tRCD: 5 tRP: 5 tRAS: 15 Cooling Technology Heatsink: Stiletto