2GB DDR2 PC 6400 DDR 2 800MHZ Desktop PC Memory Module Computer Desktop DDR2 RAM
(In the for Baidu search bar, enter: "CPU-Z download" search for a CPU-Z software download, decompress), after running the software, see \\\"SPD\\\" option \\\"maximum bandwidth\\\" In the column, you will see \\\"PCxx00\\\" as follows.