It is measured in millions of texels in a second. The better this number, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). This number is calculated by multiplying the total amount of texture units by the core clock speed of the chip. Texel Rate: Texel rate is the maximum texture map elements (texels) that are processed in one second. It especially helps with AA, HDR and higher screen resolutions. The higher the bandwidth is, the better the card will be in general. In the case of DDR RAM, it should be multiplied by 2 once again. It's worked out by multiplying the bus width by its memory speed. Memory Bandwidth: Memory bandwidth is the max amount of information (measured in MB per second) that can be moved over the external memory interface in a second. Please note that the above 'benchmarks' are all just theoretical - the results were calculated based on the card's specifications, and real-world performance may (and probably will) vary at least a bit. Pixel RateThe GeForce 8400 GS 512MB will be just a bit (more or less 10%) better at anti-aliasing than the GeForce GT 210, and also capable of handling higher screen resolutions without slowing down too much.
Texel RateThe GeForce 8400 GS 512MB is just a bit (about 10%) faster with regards to anisotropic filtering than the GeForce GT 210.
Theoretically speaking, the GeForce GT 210 will be 100% quicker than the GeForce 8400 GS 512MB in general, due to its higher data rate.
Power Usage and Theoretical Benchmarks Power Consumption (Max TDP) GeForce GT 210