Validating recent leaks, Apple has released two new Xserve models. The servers are sized to fit a 1U rack, and have been upgraded to Intel's Nehalem platform, which Apple claims can produce up to an 89 percent improvement in terms of performance per watt. The base model uses a single, 2.26GHz quad-core Xeon CPU, while the upper tier adds a second Xeon and allows scaling clock speed up to 2.93GHz
