CT8G3ERSDD8186D is a single 8GB Dual Rank DDR3 Server module that operates at speeds up to 1866 MT/s and has a CL13 latency. It is registered with ECC error correction. It conforms to the industry standard RDIMM layout of 240 pins and is compatible with computers that take DDR3 RDIMM memory. Specifications: - Dimensions: 17.4cm x 5.4cm - Memory Size: 8GB - Memory Speed: 1866 MHz - Memory Technology: DDR3 SDRAM - Memory Standard: DDR3-1866/PC3-14900 - CAS Latency: CL13 - Form Factor: DIMM What's in the box 1 x Crucial desktop memory