C# Performance

Question

I was comparing the general performance of a c# media player Im writing with all basic + some advanced features against the windows media player (still unmanaged c++ I asume) and was slghtly disapointed by the performance (for as few features and objects my app was running compared to what Windows Media player must be using) was almost the same, actully because of the inherit 20 or so meg loading mem grab to load the runtime my mem usage was a few megs over Windows media. While not too suprising I want to do more comparisons. Could somebody point me to a good reference on comparing performance values for different areas of the framework. Or perhaps a good testing tool to achive real comparable numbers? What ratio of performance hit does a .NET framework based app take because it is .NET. http://randomseed.dyndns.org if anybody is interested to see the application Im refering to. full API, Wrapper dll's and installer availible to all!