Patriot Signature DDR2 2GB CL6 800MHz DIMM (PC2 6400) PSD22G80026 PC2-6400 (800MHz) Data Rate 240-Pin Dual in-line memory module Unbuffered 2 Rank Double-sided module 7.8US Refresh Interval (8192 CYCLES/64MS) 1.8V Power Requirement Auto and self refresh capability PCB height: 1181 (mil)