ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The number is worked out by multiplying the amount of Raster Operations Pipelines by the the core clock speed. Pixel Rate: Pixel rate is the most pixels the video card can possibly record to the local memory in one second - measured in millions of pixels per second. It is measured in millions of texels processed in a second. The higher this number, the better the card will be at handling texture filtering (anisotropic filtering - AF). This number is worked out by multiplying the total number of texture units of the card by the core speed of the chip. Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are applied per second. ![]() It especially helps with anti-aliasing, High Dynamic Range and high resolutions. The higher the memory bandwidth, the faster the card will be in general. If it uses DDR RAM, it should be multiplied by 2 again. ![]() The number is worked out by multiplying the card's interface width by its memory clock speed. Memory Bandwidth: Bandwidth is the max amount of data (counted in megabytes per second) that can be transported past the external memory interface in a second.
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