The better this number, the better the graphics card will be at texture filtering (anisotropic filtering - AF). This figure is worked out by multiplying the total texture units of the card by the core clock speed of the chip. Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be processed in one second. It especially helps with AA, High Dynamic Range and high resolutions. The higher the card's memory bandwidth, the faster the card will be in general. If the card has DDR type RAM, the result should be multiplied by 2 again.
The number is calculated by multiplying the interface width by the speed of its memory. Memory Bandwidth: Bandwidth is the largest amount of information (in units of MB per second) that can be transferred across the external memory interface in a second.
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