Radeon HD 5770 vs Radeon RX 560

Intro

Compare those specifications to the Radeon RX 560, which has GPU clock speed of 1175 MHz, and 4096 MB of GDDR5 memory running at 1750 MHz through a 128-bit bus. It also is comprised of 1024 SPUs, 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 5770		108 Watts
	Difference: 28 Watts (35%)

Memory Bandwidth

In theory, the Radeon RX 560 should be much faster than the Radeon HD 5770 in general. (explain)

Radeon RX 560		114688 MB/sec
Radeon HD 5770		76800 MB/sec
	Difference: 37888 (49%)

Texel Rate

The Radeon RX 560 will be much (more or less 121%) more effective at anisotropic filtering than the Radeon HD 5770. (explain)

Radeon RX 560		75200 Mtexels/sec
Radeon HD 5770		34000 Mtexels/sec
	Difference: 41200 (121%)

Pixel Rate

The Radeon RX 560 is a lot (approximately 38%) better at anti-aliasing than the Radeon HD 5770, and able to handle higher resolutions while still performing well. (explain)

Radeon RX 560		18800 Mpixels/sec
Radeon HD 5770		13600 Mpixels/sec
	Difference: 5200 (38%)

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 (counted in megabytes per second) that can be moved over the external memory interface in a second. The number is calculated by multiplying the interface width by its memory clock speed. In the case of DDR type memory, it must be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the faster the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels the video 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 Render Output Units by the the card's clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate also depends on many other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.