16GB DDR3 ECC memory kit, 1066MHz speed rating, PC3-8500 DDR standard. Full memory timings of CL7 (7-7-7-20) and operates at a voltage of 1.5V. This 16GB kit contains two matched 8GB memory modules with 240 pins.
Designed for Mac Pro 8-Core (Mid 2010), Mac Pro (Mid 2010 Quad-Core), Mac Pro (Early 2009 8-Core), Mac Pro (Early 2009 Quad-Core), Xserve 8-Core (Early 2009), Xserve Quad-Core (Early 2009), as well as some PC desktops/servers:
Compatible with Intel / AMD Process based PCs capable with the specifications listed above. Memory complies with JEDEC Specifications, document JESD79-3B.