As Paul Steeves mentioned this morning, the PowerEdge R820 is a 4-socket 2U rack server that packs a lot of processing power into a dense form factor. He has a lot of great proof points in his blog that I recommend reading.
In addition, today Intel touted multiple industry-standard SPEC benchmarks using the PowerEdge R820 on their E5-4600 performance page; in fact, the Dell PowerEdge R820 was the only partner platform highlighted by Intel at launch! Check out Intel's graphs below for reference:
As you can see, the PowerEdge R820 shines in overall performance (as measured by SPECint, SPECfp, and SPECjbb), yet does not sacrifice on energy efficiency, as proved out by SPECpower_ssj2008!
The PowerEdge R820 is also great for HPC enviroments such as LINPACK; we've measured 649.2 GFLOPS in our lab, an 85% improvement above the 351.6 GFLOPS we measured on the R720!
We've got some other very interesting performance comparisons using the extremely powerful (but power-efficient!) PowerEdge R820 coming up, so stay tuned to this blog for more information!
References for full disclosure:
SPEC and the benchmark names SPECint, SPECfp, SPECjbb, and SPECpower are registered trademarks of the Standard Performance Evaluation Corporation. Information on comparisons in the charts referenced above can be found at http://www.intel.com/content/www/us/en/benchmarks/server/xeon-e5-4600.html.
LINPACK configuration: PowerEdge R820, 4 x Intel Xeon E5-4650 as compared to PowerEdge R720, 2 x Intel Xeon E5-2690 processors.