More demos here
http://developer.amd.com/samples/demos/pages/ATIRadeonHD5800SeriesRealTimeDemos.aspx
Won't run on anything other than Win7 though.
I guess they may run on Vista with DX11 installed
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More demos here
http://developer.amd.com/samples/demos/pages/ATIRadeonHD5800SeriesRealTimeDemos.aspx
Won't run on anything other than Win7 though.
I guess they may run on Vista with DX11 installed
EDIT: If your soundcard has multiple profiles i.e. X-Fi make sure your in game mode to enable the proper hardware acceleration support.
You need a 5 series card for dx11 the 4 series cards are dx10.1 you need dx11 to run tessellation.x1950 pro cards are dx9.