It is measured in millions of texels processed per second. The higher the texel rate, the better the video card will be at texture filtering (anisotropic filtering - AF). This figure is calculated by multiplying the total amount of texture units by the core speed of the chip. Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are applied in one second. It especially helps with anti-aliasing, HDR and high resolutions. The higher the card's memory bandwidth, the faster the card will be in general.
If it uses DDR type RAM, the result should be multiplied by 2 once again. The number is worked out by multiplying the card's interface width by its memory clock speed. Memory Bandwidth: Memory bandwidth is the largest amount of data (counted in megabytes per second) that can be transported past the external memory interface in a second.
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