4GB DDR2 PC2-6400 800MHz Non-ECC Desktop Memory DIMMDESCRIPTION 4GB DDR2 PC2 6400 800MHz Non ECC Desktop Memory RAM DIMM Memory 4GB PC2 6400 800MHz DDR2 240 Pin Non ECC CL6 1. 8V Desktop Memory RAM DIMM Capacity 4GB Type PC2 6400 Memory Speed 800MHz (PC2 6400) Technology DDR2 DIMM CAS Latency CL6 Data Integrity Non ECC Buff Unbuffered Unbuffered Voltage 1. 8 Volt Form Factor 240 Pin Non ECC UDIMM Warranty Lifetime Warranty MS ID Number 00766 100% Compatibility Guaranteed All Memory Modules are of Major