Lexar Crucial Technology BL2KIT12864AL804 2GB 240-Pin DIMM DDR2 PC2-6400 Memory Module Module Size: 2GB kit (1GBx2) Package: Ballistix Tracer 240-pin DIMM (with LEDs) Feature: DDR2 PC2-6400 Specs: DDR2 PC2-6400  4-4-4-12  Unbuffered  NON-ECC  DDR2-800  2.2V  SLI-Ready  128Meg x 64