HyperX Memory 256MB 800MHz DDR2 CL5, 0.25 GB, DDR2, 800 MHz, 240-pin DIMM HyperX Memory 256MB 800MHz DDR2 CL5. Internal memory: 0.25 GB, Internal memory type: DDR2, Memory clock speed: 800 MHz, Memory form factor: 240-pin DIMM, CAS latency: 5