Apple today introduced the new Xserve, a 1U rack-optimized server that is up to twice as fast as its predecessor and includes an unlimited client license for Mac OS X Server Leopard. Starting at US$2,999 and shipping today, the new Xserve has up to two Quad-Core 3.0 GHz Intel Xeon processors for 8-core performance, a new server architecture, faster front side buses, faster memory, up to 3TB of internal storage and two PCI Express 2.0 expansion slots for greater performance and flexibility.