Model Brand Kingston Series HyperX Model KHX6400D2LLK2/2G Type 240-Pin DDR2 SDRAM Tech Spec Capacity 2GB (2 x 1GB) Speed DDR2 800 (PC2 6400) Cas Latency 4 Timing 4-4-4-12 Voltage 1.95V ECC No Buffered/Registered Unbuffered Heat Spreader Yes Features Tested for optimum performance on ASUS P5WDG2-WS and ASUS P5WD2-Premium