» Thu May 10, 2012 3:50 am
That's weird.http://www.amd.com/us/products/desktop/graphics/ati-radeon-hd-4000/hd-4870/Pages/ati-radeon-hd-4870-specifications.aspx a 4870 has DirectX10.1 support. In your Catalyst Control Center, try moving all the sliders under "Gaming --> 3D Application Settings" to Quality.