A-Tech 32GB KIT (4 x 8GB) for Intel SR Series SR1630GP, SR1630GPRX, SR1630HGP, SR1630HG. DIMM DDR3 ECC Registered PC3-12800 1600MHz Dual Rank Server RAM Memory at Amazon.com
32GB (4 x 8GB) PC10600 DDR3 1333MHz SO-DIMMs Memory Compatible with 2011 MacBook Pro, Mid 2010/2011 21.5" & 27" iMac Models, 2011 Mac Mini (OWC1333DDR3S32S) at Amazon.com
Kingston Technology 32GB (1 X 32GB) 1066MHz DDR3 240-Pin Quad Rank Registered ECC Low Voltage DIMM for IBM Servers (PC3 8500) KTM-SX310QLV/32G at Amazon.com
Amazon.com: HP 32GB Quad Rank x4 PC3L-10600L (DDR3-1333) 1.35V Reduced Low Voltage Memory, 647903-B21 : Electronics
Kingston Technology 32GB Kit of 4 (4 x 8GB) DDR3 1600MHz PC3-12800 ECC DIMM Memory for Select HP/Compaq Desktops KTH-PL316EK4/32G at Amazon.com