Radeon HD 6950 vs Radeon RX 560

Intro

Compare all of that to the Radeon RX 560, which features core speeds of 1175 MHz on the GPU, and 1750 MHz on the 4096 MB of GDDR5 RAM. It features 1024 SPUs as well as 64 TAUs and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 560		80 Watts
Radeon HD 6950		200 Watts
	Difference: 120 Watts (150%)

Memory Bandwidth

In theory, the Radeon HD 6950 is 40% faster than the Radeon RX 560 in general, because of its greater bandwidth. (explain)

Radeon HD 6950		160000 MB/sec
Radeon RX 560		114688 MB/sec
	Difference: 45312 (40%)

Texel Rate

The Radeon RX 560 is a small bit (about 7%) better at anisotropic filtering than the Radeon HD 6950. (explain)

Radeon RX 560		75200 Mtexels/sec
Radeon HD 6950		70400 Mtexels/sec
	Difference: 4800 (7%)

Pixel Rate

The Radeon HD 6950 is much (more or less 36%) faster with regards to AA than the Radeon RX 560, and also will be able to handle higher resolutions without slowing down too much. (explain)

Radeon HD 6950		25600 Mpixels/sec
Radeon RX 560		18800 Mpixels/sec
	Difference: 6800 (36%)

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: Bandwidth is the largest amount of data (measured in megabytes per second) that can be transported past the external memory interface within a second. It is worked out by multiplying the card's interface width by the speed of its memory. If it uses DDR memory, it should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the faster the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be applied per second. This figure 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 handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels in one second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip could possibly write to the local memory per second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of Render Output Units by the the card's clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate is also dependant on quite a few other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.