Because framebuffer bandwidth is shared between the two graphics processors, framerates at 1600x1200 can be severely limited. 'Speedway,' a polygon and texture intensive 3D WinMark 2000 scene with approximately 64,867 triangles per frame and 16.4 megabytes of uncompressed textures, or 3 megabytes compressed, illustrates this (Fig 3). Using compressed textures (3 megabytes), 16-bit rendering and the software transformation and lighting path, framerates between the GeForce2 GTS and Voodoo5 5500 are comparable. Doubling frame and depth buffer bandwidth requirements to 32-bit severely impacts the Voodoo5 5500 framerates. This is not the case for the GeForce2 GTS.
