Microsoft just released two new benchmark reports for Windows Server AppFabric and Microsoft .NET Framework 4.0.  These reports can be downloaded from http://msdn.microsoft.com/en-us/netframework/stocktrader-benchmarks.aspx.

The first looks at the use of Microsoft Windows Server AppFabric Caching Services, comparing the performance of Microsoft Windows Server AppFabric to IBM eXtreme Scale 7.1 as a middle-tier distributed caching solution. 

The second report looks at the performance of .NET Framework 4.0 in a variety of scenarios as compared to IBM WebSphere 7.0.  Both reports include pricing information and comparisons, as well as full tuning details and source code.

The results show a very large price-performance advantage with Windows Server AppFabric and Microsoft .NET Framework 4.0 vs. IBM WebSphere 7 and IBM eXtreme Scale 7.1. 

I encourage customers to visit http://msdn.microsoft.com/en-us/netframework/stocktrader-benchmarks.aspx and download the two benchmark reports.