Mushkin 990617 SDRAM 256MB PC133 32Mx8 PC133 3-3-3-6 NONE 3.3V 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. Type: SDRAM Voltage: 3.3V Speed Spec: PC133 Frequency: 133MHz Capacity Kit Type: Module Module Size: 256MB Module Build: 32Mx64 Chipset Density: 32Mx8 Timings tCL: 3 tRCD: 3 tRP: 3 tRAS: 6 Cooling Technology Heatsink: None