AMD has made the ATI Ruby: Whiteout demo for the Radeon 2900 XT available for download.
This demo shows off the DX10 capabilities.
Ruby's latest adventure takes place in a rugged, mountainous terrain where her skills as a snowboarder are tested and may just save her life. This fast paced, action packed demo exploits the power of the ATI Radeon HD 2900XT to create a rich and expansive landscape of snow, rock, and ice. From the procedural snow accumulation on the harsh terrain to the wrinkles on Ruby's brow and the physics that drive each strand of fur on Ruby's fur collar, the ATI Radeon HD 2900XT can handle it all.