Full Details from Amazon.com : http://www.amazon.com/gp/product/B004TM814W?tag=onigi-20
24GB Kit Apple Mac Pro Nehalem Tower Memory Upgrade 3 x 8GB DDR3 PC3-8500 ECC DIMMs
24 GB Kit 3 x 8 GB
DDR3 1066 PC3 8500
ECC UNBUFFERED 240-PIN DIMM
Apple Memory
Lifetime Warranty