Kingston 4GB (2x 2GB) DDR2 800 M Hz/PC2-6400 Hyper X Memory Non-ECC CL5 Kingston Technology Company is the world’s independent memory leader, with an extensive line of computer memory & digital media products. Launched in 2001, Hyper X memory modules are specifically engineered & tested for higher speeds & lower latencies. Hyper X memory is designed based on the latest DDR2 & DDR3 specifications available. Kingston Technology invests millions in the quality of its modules to reduce your total cost of ownership. Before shipping, all Hyper X memory is design proven in functional testing & is 100% production tested this make Hyper X a sought after memory solution by PC enthusiasts, PC gamers & overclockers.