Hynix original 16GB (2 x 8GB), 204-pin SODIMM, DDR3 PC3L-12800, 1600MHz memory module at Amazon.com
Amazon.com: SK Hynix 16GB 2Rx4 PC3L 10600R 1333MHZ HMT42GR7MFR4A IBM P/N 78P1915 Compatible with IBM Flex System p24L Compute Node, Power 7 8231-E1C, 8231-E1D, 8231-E2C, 8231-E2D, or 8268-E1D System Parts : Electronics