G.Skill 4GB DDR3-1333 memory module 1 x 4 GB 1333 MHz

Internal memory: 4 GB | Buffered memory type: Unregistered (unbuffered) | Harmonized System (HS) code: 84733020 | Memory clock speed: 1333 MHz | ECC: No | Memory voltage: 1.5 V | Memory layout (modules x size): 1 x 4 GB | Memory channels: Single-channel | Height: 30 mm | Memory form factor: 240-pin DIMM | Internal memory type: DDR3 | Package type: DIMM | CAS latency: 9