OWC Mac Memory 4GB 1066Mhz DDR3 ECC DIMM Mac MemoryThe 4GB DDR3 1066 MHz DIMM Memory Module from OWC features a total capacity of 4GB, a clock speed of 1066 MHz, a bus speed of PC 8500, and a 240 pin DIMM form factor. It operates using 1. 5V, has a CAS Latency of 7 7 7 20, a component configuration of 512M x 72, a module bandwidth of 8. 5 GB s, and is equipped with ECC technology. Additionally, this memory module is compatible with Apple Specified Thermal Sensor, which ensures that the RAM maintains a