"Many developers have to resort to C++ or assembly language because managed languages did not provide the performance they needed. We believe that we can bring the productivity gains of managed languages to developers that seek high performance applications...
"But even if you want to keep using your hand-tuned C++ game engine, the SIMD extensions will improve the performance of your scripting code. You can accelerate your ray casting operations by doing all the work in the managed world instead of paying for a costly managed to unmanaged transition and back."