4GB (2 slots occupied)
HP Product Number: AB454A
Dataram Product: DRH8640/4GB
(2 x 2GB DIMMs)
DDR2, Proprietary, Registered, ECC, 1.8V, 278-pin
8GB (2 slots occupied)
HP Product Number: AB455A
Dataram Product: DRH8640/8GB
(2 x 4GB DIMMs)
DDR2, Proprietary, Registered, ECC, 1.8V, 278-pin
16GB (2 slots occupied)
HP Product Number: AB456A
Dataram Product: DRH8640/16GB
(2 x 8GB DIMMs)
DDR2, Proprietary, Registered, ECC, 1.8V, 278-pin