Next-generation Intel architecture. Get nearly 2x faster performance with the new Mac Pro, now powered by all-new Quad-Core Intel Xeon “Nehalem” processors. With a new system architecture, 8MB of fully shared L3 cache, an integrated memory controller, and 1066MHz DDR3 ECC memory, these processors deliver up to 2.4x greater memory bandwidth. And new Turbo Boost technology speeds up the processor when all cores aren’t in use. Faster, more flexible graphics. The new Mac Pro features the fastest graphics ever on a Mac. Its standard configuration includes the up to 2.9x faster NVIDIA GeForce GT 120 with 512MB of GDDR3 memory. For even greater performance — up to 2x more — upgrade to the ATI Radeon HD 4870. 8-Core Two 2.26GHz Quad-Core Intel Xeon "Nehalem" processors 6GB (six 1GB) memory 640GB hard drive1 18x double-layer SuperDrive NVIDIA GeForce GT 120 with 512MB