GeForce 8800 Ultra vs Radeon RX 560

Intro

Compare that to the Radeon RX 560, which has core clock speeds of 1175 MHz on the GPU, and 1750 MHz on the 4096 MB of GDDR5 memory. It features 1024 SPUs along with 64 Texture Address Units and 16 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 560		80 Watts
GeForce 8800 Ultra		171 Watts
	Difference: 91 Watts (114%)

Memory Bandwidth

In theory, the Radeon RX 560 should be 11% quicker than the GeForce 8800 Ultra overall, because of its higher bandwidth. (explain)

Radeon RX 560		114688 MB/sec
GeForce 8800 Ultra		103680 MB/sec
	Difference: 11008 (11%)

Texel Rate

The Radeon RX 560 is a lot (about 92%) faster with regards to texture filtering than the GeForce 8800 Ultra. (explain)

Radeon RX 560		75200 Mtexels/sec
GeForce 8800 Ultra		39168 Mtexels/sec
	Difference: 36032 (92%)

Pixel Rate

The Radeon RX 560 should be quite a bit (approximately 28%) faster with regards to full screen anti-aliasing than the GeForce 8800 Ultra, and will be capable of handling higher screen resolutions more effectively. (explain)

Radeon RX 560		18800 Mpixels/sec
GeForce 8800 Ultra		14688 Mpixels/sec
	Difference: 4112 (28%)

Please note that the above 'benchmarks' are all just theoretical - the results were calculated based on the card's specifications, and real-world performance may (and probably will) vary at least a bit.

Price Comparison

Specifications

Memory Bandwidth: Memory bandwidth is the max amount of data (measured in MB per second) that can be moved across the external memory interface within a second. The number is worked out by multiplying the card's interface width by its memory speed. If it uses DDR type RAM, the result should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be applied in one second. This number is calculated by multiplying the total number of texture units by the core speed of the chip. The higher the texel rate, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in one second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card could possibly write to its local memory in a second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of Raster Operations Pipelines by the the core speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate also depends on lots of other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to get to the max fill rate.