The Power Mac G5 is the world’s fastest personal computer and the first with a 64-bit processor — which means it breaks the 4 gigabyte barrier and can use up to 8 gigabytes of main memory. The new G5 processor — available at speeds up to dual 2GHz with a new ultrahigh-bandwidth system architecture featuring AGP 8X and PCI-X — makes the Power Mac G5 a breakthrough in desktop processing power. And models start at just $1999.