
It is measured in millions of texels per second. The higher this number, the better the video card will be at handling texture filtering (anisotropic filtering - AF). This is calculated by multiplying the total number of texture units by the core speed of the chip. Texel Rate: Texel rate is the maximum texture map elements (texels) that are processed per second. It especially helps with anti-aliasing, High Dynamic Range and high resolutions. The higher the bandwidth is, the faster the card will be in general. In the case of DDR type memory, it must be multiplied by 2 again. The number is worked out by multiplying the card's interface width by the speed of its memory.

Memory Bandwidth: Bandwidth is the maximum amount of data (measured in megabytes per second) that can be moved past the external memory interface within a second.
