8GB (4X2GB) DDR2-800 PC2-6400 800MHz NEMIX RAM Memory Kit Certified for APPLE MAC PRO Early 2008 3,1 (Quad Core, 8-core 2.8 3.0 3.2) MA970LLA Mac Pro 2008 (Early 2008) 4 Core / 8 Core (2.8MHz, 3.0MHz, 3.2MHz) Second Generation MacPro3,1 100% certified Apple Mac Pro Memory with Mac Pro certified heat shields Memory Upgrade for Apple Mac Pro 2008 3,1 DDR2 800MHz PC2-6400 Fully Buffered Mac Pro Modules 8GB of total Ram using four 2GB DDR2 Fully Buffered Memory MA970LL/A A1186 2180 Matched Set of four 2GB, PC2-6400, DDR2-800, 800MHz, 5ns Cycle Time, ECC, Fully-Buffered, 256x72, 1.8V, 240pin FB-DIMMs