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ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The figure is worked out by multiplying the number of Render Output Units by the clock speed of the card. Pixel Rate: Pixel rate is the most pixels that the graphics chip can possibly write to the local memory per second - measured in millions of pixels per second. It is measured in millions of texels per second. The higher the texel rate, the better the card will be at handling texture filtering (anisotropic filtering - AF). AMD Radeon R7 M445 vs NVIDIA GeForce 940M - Benchmarks, Tests and Comparisons. For comparison, a GeForce 930M is about 20 to. This number is worked out by multiplying the total number of texture units by the core clock speed of the chip. The GeForce 920M offers a performance similar to the AMD Radeon R7 M260 or R7 M360 and will handle modern games (as of 2014/2015) in low settings only. Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be processed in one second.
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It especially helps with AA, HDR and higher screen resolutions. The higher the card's memory bandwidth, the faster the card will be in general. If it uses DDR RAM, the result should be multiplied by 2 once again.
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It's calculated by multiplying the bus width by the speed of its memory. Memory Bandwidth: Memory bandwidth is the maximum amount of information (counted in megabytes per second) that can be transported across the external memory interface in one second.