The rx7620 is an sx1000 based 10U server from HP.
It can have up to 8 Madison processors on 2 cell boards.
It has 16 DIMM slots per cell board which must be loaded in quads. 512MB to 2GB DIMMs are supported, hp part numbers AB307A, AB308A and AB309A.
It has four internal SCSI drive bays and one DVD drive.
It has 15 PCI-X slots.