Radeon HD 6770 vs Radeon RX 560

Intro

Compare that to the Radeon RX 560, which uses a 14 nm design. AMD has clocked the core frequency at 1175 MHz. The GDDR5 RAM runs at a speed of 1750 MHz on this particular model. It features 1024 SPUs along with 64 Texture Address Units 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 6770		108 Watts
	Difference: 28 Watts (35%)

Memory Bandwidth

Theoretically speaking, the Radeon RX 560 will be 71% faster than the Radeon HD 6770 overall, because of its greater bandwidth. (explain)

Radeon RX 560		114688 MB/sec
Radeon HD 6770		67200 MB/sec
	Difference: 47488 (71%)

Texel Rate

The Radeon RX 560 is much (approximately 109%) faster with regards to anisotropic filtering than the Radeon HD 6770. (explain)

Radeon RX 560		75200 Mtexels/sec
Radeon HD 6770		36000 Mtexels/sec
	Difference: 39200 (109%)

Pixel Rate

If running with a high resolution is important to you, then the Radeon RX 560 is the winner, by far. (explain)

Radeon RX 560		18800 Mpixels/sec
Radeon HD 6770		14400 Mpixels/sec
	Difference: 4400 (31%)

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 maximum amount of information (counted in MB per second) that can be transferred past the external memory interface in one second. It is worked out by multiplying the card's bus width by its memory speed. If it uses DDR type memory, the result should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be processed per second. This number is worked out by multiplying the total texture units of the card by the core speed of the chip. The better this number, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card can possibly record to its local memory in a second - measured in millions of pixels per second. The number is calculated by multiplying the amount of Raster Operations Pipelines by the the core speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate is also dependant on quite a few other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.