HP 4GB DDR3 SDRAM Memory Module - 4 GB (2 x 2GB) - DDR3-1866/PC3-14900 DDR3 SDRAM - 1866 MHz - Non-ECC - Unbuffered - 240-pin - DIMM
CTO 4GB DDR3-1866 2X2GB 2CPU
Technical Specifications:
Memory Size: 4 GBMemory Technology: DDR3 SDRAMNumber of Modules: 2 x 2GBMemory Speed: 1866 MHzMemory Standard: DDR3-1866/PC3-14900Error Checking: Non-ECCSignal Processing: UnbufferedNumber of Pins: 240-pinForm Factor: DIMM