ModelBrand: G.SKILL Series: ECO Series Model: F3-10666CL8D-4GBECO Type: 240-Pin DDR3 SDRAM Tech SpecCapacity: 4GB (2 x 2GB) Speed: DDR3 1333 (PC3 10666) Cas Latency: 8 Timing: 8-8-8-24-2N Voltage: 1.35V ECC: No Buffered/Registered: Unbuffered Multi-channel Kit: Dual Channel Kit Heat Spreader: Yes Features: Designed Specifically for Socket LGA 1156 Intel Core i5 & i7 CPUs Manufacturer WarrantyParts: Lifetime limited Labor: Lifetime limited