HP DL980 G7 - Manual (Page 38)

Hardware options installation 38
Memory options
This server contains eight memory cartridge connectors in each processor memory drawer. Each memory
cartridge can contain eight DIMMs, for a total of 128 DIMMs, for a maximum memory configuration of 2 TB.
The server supports the following DIMM speeds:
• Single- and dual-rank PC3-10600 (DDR-1333) DIMMs operating at 1066 MHz
• Quad-rank PC3-8500 (DDR-1066) DIMMs operating at 1066 MHz
Depending on the processor model, the memory clock speed may be reduced to 1066 or 800 MHz.