Microsoft has released a ppt presentation for download that discusses the best practices for developing Games on Windows Phone 7 .
The download includes a zip file which intrurn includes a ppt file …
This was the same presentation made by Allan Murphy , Senior Software
Development Engineer , Advanced Technology Group,Microsoft at GDC 2011
which explains Garbage collection ,
CPU and GPU performance and how to find performance problems at low level
“Find out how to double-check your performance hunches by using assembly metadata, examining intermediate language, and tracking what the framework is doing.”
You can download the presentation from Microsoft Download Center