Mid-2010 - MacPro5,1 (12-core)
Compatible upgrades for Mid 2010 Twelve core Mac Pro's.
Standard RAM: 6 GB
Maximum RAM: 128 GB*
Details: 6 GB of RAM is installed as six 1 GB modules. Two slots are free.
*Apple officially supports 32 GB of RAM in this model. However, this model actually can support 96 GB running Mac OS X 10.6 or 10.7, and yet again to 128 GB, but only when running a 64-bit version of Windows XP or later or Linux. Mac OS X only can support 96 GB of RAM.
RAM Slots: 8*