A-Tech 32GB KIT (2 x 16GB) for Asus Z Motherboard Series Z8NA-D6, Z8NA-D6C, Z8NH-D12 DIMM DDR3 ECC Registered PC3-12800 1600MHz Dual Rank Server RAM Memory at Amazon.com
16GB Kit 2 x 8GB DDR3 PC3-12800 1600 Mhz DESKTOP MEMORY 240 PIN Non-ECC CL 11 at Amazon.com
Ramjet 16GB DDR3-1600 PC3-12800 DDR3 1600Mhz SO-DIMM Kit for Apple iMac (2X 8GB) at Amazon.com