24GB -3x8GB Memory Ram For Apple Mac Pro 4.1 2009 Quad & 8-Core all CPU speeds
Total Capacity: 24GB. INSIDE YOUR MAC PRO QUAD CORE. below is link that shows every compatible Xeon CPU, its details each CPU and its maximum supported ram size/speed. Quad Core Model: 2.66Ghz / 2.93Ghz / 3.33Ghz.