Graphics Core Next 3 (Volcanic Islands) is found on the R9 285 (Tonga Pro) branded products.Non-disclosure agreements were lifted on October 15, except for the R9 290X, and pre-orders opened on October 3. The Rx 200 series was announced on September 25, 2013, at the AMD GPU14 Tech Day event. These GPUs are manufactured on a 28 nm Gate-Last process through TSMC or Common Platform Alliance. The actual pixel fill rate is also dependant on lots of other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.The Radeon 200 series is a series of graphics processors developed by AMD. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen.
The number is worked out by multiplying the amount of ROPs by the the core clock speed. Pixel Rate: Pixel rate is the most pixels that the graphics chip could possibly record to its local memory per second - measured in millions of pixels per second. It is measured in millions of texels applied per second. The better this number, the better the graphics card will be at texture filtering (anisotropic filtering - AF). This figure 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 amount of texture map elements (texels) that are applied per second. It especially helps with AA, HDR and higher screen resolutions. The better the memory bandwidth, the faster the card will be in general. If the card has DDR type RAM, the result should be multiplied by 2 once again. The number is worked out by multiplying the card's bus width by its memory speed. Memory Bandwidth: Bandwidth is the maximum 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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