Radeon HD 6770 vs Radeon RX 560

Intro

Compare those specs to the Radeon RX 560, which features core clock speeds of 1175 MHz on the GPU, and 1750 MHz on the 4096 MB of GDDR5 RAM. 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
Radeon HD 6770		108 Watts
	Difference: 28 Watts (35%)

Memory Bandwidth

Theoretically speaking, the Radeon RX 560 should be 71% quicker than the Radeon HD 6770 overall, due to 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 will be much (approximately 109%) more effective at texture 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 high levels of AA is important to you, then the Radeon RX 560 is a better choice, by a large margin. (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: Bandwidth is the max amount of information (measured in megabytes per second) that can be transported across the external memory interface within a second. The number is calculated by multiplying the interface width by the speed of its memory. If it uses DDR RAM, it must be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the bandwidth is, the faster the card will be in general. It especially helps with AA, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the most pixels the video card could possibly record to the local memory in a second - measured in millions of pixels per second. The number is calculated by multiplying the amount of ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate is also dependant on quite a few other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the maximum fill rate.