HP-Compaq Evo D500 SFF P4/ Celeron (1.5 G Hz-2.2 G Hz) (Intel 845) desktop memory, desktop ram has been specifically designed for your HP-Compaq Evo D500 SFF P4/ Celeron (1.5 G Hz-2.2 G Hz) (Intel 845) is guaranteed 100% compatible & carries a lifetime warranty.