The actual pixel output rate also depends on many other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to get to the max fill rate. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). Pixel rate is calculated by multiplying the amount of Raster Operations Pipelines by the the card's clock speed. Pixel Rate: Pixel rate is the maximum amount of pixels the video card can possibly record to its local memory in a second - measured in millions of pixels per second. It is measured in millions of texels applied in one second. The better the texel rate, the better the card will be at texture filtering (anisotropic filtering - AF). This is worked out by multiplying the total amount of texture units of the card by the core speed of the chip. Texel Rate: Texel rate is the maximum texture map elements (texels) that are applied per second. It especially helps with AA, High Dynamic Range and high resolutions. The higher the memory bandwidth, the faster the card will be in general. In the case of DDR memory, it must be multiplied by 2 again. It's worked out by multiplying the interface width by its memory speed. The actual pixel fill rate is also dependant on many other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to get to the max fill rate.Memory Bandwidth: Bandwidth is the max amount of information (counted in megabytes per second) that can be moved over the external memory interface in a second. ![]() ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The number is worked out by multiplying the number of Raster Operations Pipelines by the clock speed of the card. Pixel Rate: Pixel rate is the most pixels that the graphics card can possibly record to the local memory in a second - measured in millions of pixels per second. It is measured in millions of texels applied per second. Comparing the GTX 980 and 780 Ti shows that the Newer. Even though the GTX 970 beats the 980 in terms of value, the 980 still destroys previous generation cards. The better this number, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). Comparing the GTX 980 and GTX 970 shows that the 970 only lags by around 17 in terms of performance but it's priced nearly 40 lower making the GTX 970 far better value for money card. This figure 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 can be applied per second. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions. The better the card's memory bandwidth, the better the card will be in general. The GeForce GTX 750 Ti graphics card comes loaded with next-gen NVIDIA gaming technology like TXAA, FXAA, GPU Boost 2.0, and GeForce Experience, as well as 128 more NVIDIA CUDA cores than the GTX 750. In the case of DDR type RAM, it should be multiplied by 2 once again. ![]() It's worked out by multiplying the card's bus width by its memory clock speed. Memory Bandwidth: Bandwidth is the largest amount of information (in units of megabytes per second) that can be transferred over the external memory interface in one second.
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