Compaq ProLiant BL20p can be upgraded to a maximum memory of
4.0 GB , this system has 4 sockets (2 banks of 2) to install
Memory and comes already installed with 512MB = 256 MB + 256 MB of standard Memory. Compaq ProLiant BL20p takes PC133 Registered ECC SDRAM DIMMs . You may choose the following Memory Upgrades.