48GB -3x16GB Memory Ram Apple Mac Pro 5.1 2010 Hex Core and 12-Core all CPU's
Your Mac Pro has 4 slots and the maximum possible upgrade is 56GB (3x16GB + 1x8GB) or 64GB (4x16GB) depending on what CPU you have installed . Total Capacity: 48GB. Hex Core Model: 3.33Ghz. INSIDE YOUR MAC PRO HEX CORE.