ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. Pixel rate is worked out by multiplying the amount of Raster Operations Pipelines by the the card's clock speed. Up to 800 MHz Graphics Clock (MHz) Up to 12.8 Texture Fill Rate (billion/sec) Memory Specs: DDR3GDDR5 Memory Interface. Pixel Rate: Pixel rate is the most pixels that the graphics card can possibly write to its local memory in a second - measured in millions of pixels per second. Please refer to OEM website for actual shipping specifications. It is measured in millions of texels applied per second. The better the texel rate, the better the video card will be at texture filtering (anisotropic filtering - AF). This is calculated by multiplying the total amount of texture units by the core speed of the chip. Texel Rate: Texel rate is the maximum texture map elements (texels) that can be processed in one second. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.
The higher the card's memory bandwidth, the better the card will be in general. If it uses DDR RAM, the result should be multiplied by 2 again. It is worked out by multiplying the card's bus width by its memory clock speed. Detailed NVIDIA comparison: GeForce 920M vs 930M vs 940M vs 950M vs 960M vs 965M vs 970M vs 980M (benchmarks, gaming tests, specs and prices) Comparisons Detailed NVIDIA comparison: GeForce 920M vs 930M vs 940M vs 950M vs 960M vs 965M vs 970M vs 980M (benchmarks, gaming tests, specs and prices).
Memory Bandwidth: Memory bandwidth is the maximum amount of information (counted in megabytes per second) that can be transported past the external memory interface in one second.
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