Crucial Technology 2GB Ballistix Sport Series Memory 1 DDR2 800 (PC2 6400) BLS2G2D80EBS1S00 They feature heat spreaders for thermal performance -- along with standard timings and voltages, making this reliable, quality module ideal for maximum stability and compatibility. The Ballistix Sport Series memory is available in both DDR2 and DDR3 in the most common and popular speeds and densities. Crucial Ballistix Sports Series memory is backed by our outstanding service and support, enjoys a limited lifetime warranty, and is guaranteed compatible.