ACP - Memory Upgrades FACTORY ORIGINAL 8GB DDR3 1333MHz Dual Rank LP Module. 8GB DDR3-1333MHZ DR X4 RDIMM HP PROLIANT KTH-PL313/8G SYSMEM. 8GB (1 x 8GB) - 1333MHz ECC - DDR3 SDRAM - 240-pin DIMM