Dear ASUS customers, in terms of CPU, we can recommend Intel E6 or E7 series CPUs, the price is about six to seven hundred yuan; the memory can be added with 2G DDR 3 1333, and 4G memory requires a 64-bit system. Support, it is recommended that you install the system to XP 64-bit or Win 7 64-bit system. The graphics card can be upgraded to Nvidia's GTX5 series. Thank you for your support of ASUS.