PNY Verto GeForce 6800 GS PCI-E OC vs Point of View GeForce 6800 GS 512MB

There are two factors that influence the maximum pixel fillrate. These are the number of ROPs and graphics frequency. The PNY Verto GeForce 6800 GS PCI-E OC has an upper hand here, as it runs at higher rate, and both graphics cards have identical number of Raster Operations Pipelines. Better maximum pixel fill rate allows more pixels to be drawn on screen per second, which results in increased performance, unless the GPU is limited by something else, such as memory bandwidth or texture mapping.

In modern games, pixel fillrate is not as important as texture fill rate. This parameter is proportional to graphics clock speed and the number of TMUs. The PNY Verto GeForce 6800 GS PCI-E OC has a small advantage here, as it operates at higher frequency, and both graphics cards have the same number of Texture Mapping Units. Having better texture fill rate allows the graphics card to apply more textures and/or utilize more sophisticated 3D effects for each textured picture element, which improves games visual appearance.

 

To speed up processing, the graphics cards store 3D scene data, textures and intermediate data, used for image generation, in on-board memory. The video memory usually has much higher bandwidth than system RAM, and more bandwidth allows the graphics card to run at higher display resolutions, use larger and more detailed textures, and apply more complex 3D effects and filters. Memory type, speed, and memory interface width all affect the bandwidth value. Specifically, higher memory bandwidth of the PNY Verto GeForce 6800 GS PCI-E OC is a direct result of higher memory clock.