The actual pixel fill rate also depends on quite a few other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the max fill rate. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The number is calculated by multiplying the amount of Raster Operations Pipelines by the the core speed of the card. Pixel Rate: Pixel rate is the most pixels that the graphics card could possibly write to its local memory in a second - measured in millions of pixels per second. It is measured in millions of texels processed in a second. The better the texel rate, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). Core 2 Quad Q8200 (2. This is worked out by multiplying the total texture units of the card by the core clock speed of the chip. Nvidia GeForce GT 640 for Apple Mac Pro 2GB Flashed Single Slot GT 120 8800 GT. 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 better the card's memory bandwidth, the faster the card will be in general. ![]() If it uses DDR type memory, it should be multiplied by 2 once again. It is calculated by multiplying the interface width by its memory clock speed. Memory Bandwidth: Memory bandwidth is the max amount of information (in units of megabytes per second) that can be transferred over the external memory interface within a second.
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