the new Apple Xserve works faster, harder, and more efficiently than ever before. And it all starts with the 64-bit Quad-Core Intel Xeon Harpertown 5400 series processor. Thanks to this powerful 45-nanometer Intel Core microarchitecture processor, Xserve now runs at blazing speeds up to 3.0GHz. Each Intel Xeon processor has its own 1600MHz system bus for up to 25.6GB/s of bandwidth, so theres even faster access to main memory