8GB DDR2 CL6 PC2-6400 800MHz DIMM Kit. Patriot Memory's Signature Line DDR2 Non-ECC Unbuffered memory delivers the quality, reliability and performance expected for today's computer needs. This 8GB kit (2 x 4GB modules) is designed to run at PC2-6400 (800MHz) at CAS 6 latency timings. Built using specific build-of-materials (BOMs) we ensure that every module meets and exceeds industry standards: offering you a hassle-free upgrade.