Radeon HD 7950 3GB vs Radeon RX 560

Intro

Compare all of that to the Radeon RX 560, which comes with GPU core speed of 1175 MHz, and 4096 MB of GDDR5 memory set to run at 1750 MHz through a 128-bit bus. It also features 1024 Stream Processors, 64 Texture Address Units, and 16 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 560		80 Watts
Radeon HD 7950 3GB		200 Watts
	Difference: 120 Watts (150%)

Memory Bandwidth

Theoretically speaking, the Radeon HD 7950 3GB should be 109% quicker than the Radeon RX 560 overall, because of its higher data rate. (explain)

Radeon HD 7950 3GB		240000 MB/sec
Radeon RX 560		114688 MB/sec
	Difference: 125312 (109%)

Texel Rate

The Radeon HD 7950 3GB will be a bit (about 19%) more effective at anisotropic filtering than the Radeon RX 560. (explain)

Radeon HD 7950 3GB		89600 Mtexels/sec
Radeon RX 560		75200 Mtexels/sec
	Difference: 14400 (19%)

Pixel Rate

If using a high resolution is important to you, then the Radeon HD 7950 3GB is a better choice, by far. (explain)

Radeon HD 7950 3GB		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 maximum amount of data (measured in megabytes per second) that can be moved past the external memory interface within a second. It is worked out by multiplying the interface width by its memory speed. If it uses DDR memory, it 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 AA, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be processed in one second. This figure is calculated by multiplying the total amount of texture units by the core clock speed of the chip. The better this number, the better the 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 most pixels that the graphics card could possibly record to the local memory in a second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of colour ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate also depends on many 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.