Testing conducted by Apple in February 2009 using a preproduction 2.93GHz 8-core Xserve (SPECpower_ssj™2008 result of 464 overall ssj_ops/watt; 173W at Active Idle; 227,974 ssj_ops and 334W at 100% target load) and a shipping 3.0GHz 8-core Xserve (SPECpower_ssj™2008 result of 245 overall ssj_ops/watt; 213W at Active Idle; 141,739 ssj_ops and 353W at 100% target load). All units were configured for optimal memory performance (18GB for 2.93GHz 8-core units and 16GB for 3.0GHz 8-core units). SPEC® and the benchmark name SPECpower_ssj™ are trademarks of the Standard Performance Evaluation Corporation (SPEC); see www.spec.org for more information. Competitive benchmark results stated here reflect internal Apple testing and were submitted to SPEC in February 2009. For the latest SPECpower_ssj2008 benchmark results, visit www.spec.org/power_ssj2008. Performance tests are conducted using specific computer systems and reflect the approximate performance of Xserve.

Testing conducted by Apple in February 2009 using preproduction 2.93GHz 8-core Xserve units, preproduction 2.26GHz quad-core Xserve units, and shipping 3.0GHz 8-core Xserve units. All units were configured for optimal memory performance (18GB for 8-core 2.93GHz units, 12GB for quad-core 2.26GHz units, and 16GB for 8-core 3.0GHz units). Results are based on the STREAM v.5.8 benchmark (www.cs.virginia.edu/stream/ref.html) using OMP support for multiprocessor-compiled builds. Performance tests are conducted using specific computer systems and reflect the approximate performance of Xserve.

Testing conducted by Apple in February 2009 using preproduction 2.93GHz 8-core Xserve units and shipping 3.0GHz 8-core Xserve units. Content was encoded using the H.264 for iPod Video 640-by-480 preset in Compressor and Qmaster with the maximum number of instances available on each system. Performance tests are conducted using specific computer systems and reflect the approximate performance of Xserve.

Testing conducted by Apple in February 2009 using preproduction 2.93GHz 8-core Xeon-based Xserve units configured with Xserve RAID Card. Testing conducted using Iometer 2006.07.27 with a 30-second ramp-up, 5-minute run duration, 512KB request size, 4 outstanding IOs, and using non-OS-cached reads and writes. System configured with the operating system on Xserve solid-state drive. Performance tests are conducted using specific computer systems and reflect the approximate performance of Xserve RAID Card.

Testing conducted by Apple in February 2009 using preproduction 2.93GHz 8-core Xeon-based Xserve units configured with Xserve RAID Card. Testing conducted using Iometer 2006.07.27 with a 30-second ramp-up, 5-minute run duration, 512KB request size, 4 outstanding IOs, and using non-OS-cached reads and writes. System configured with the operating system on Xserve solid-state drive. Performance tests are conducted using specific computer systems and reflect the approximate performance of Xserve RAID Card.