The main DX10 graphics features of PT Boats: Knights of the Sea tech demo-benchmark:
To run this you need a DX10 graphics card from AMD or NVIDIA, Windows Vista and the latest graphics card drivers.Advanced ocean rendering Soft particles Reflections, light beams and advanced transparency Advanced HDR for gunfire and sun reflection
The PT Boats: Knights of the Sea DX10 benchmark can be downloaded over here (256MB).