Radeon HD 5570 vs Radeon RX 580

Intro

Compare those specs to the Radeon RX 580, which comes with a core clock frequency of 1257 MHz and a GDDR5 memory speed of 2000 MHz. It also features a 256-bit bus, and makes use of a 14 nm design. It is made up of 2304 SPUs, 144 TAUs, and 32 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 5570		43 Watts
Radeon RX 580		185 Watts
	Difference: 142 Watts (330%)

Memory Bandwidth

Theoretically speaking, the Radeon RX 580 should be quite a bit faster than the Radeon HD 5570 overall. (explain)

Radeon RX 580		262144 MB/sec
Radeon HD 5570		28800 MB/sec
	Difference: 233344 (810%)

Texel Rate

The Radeon RX 580 is quite a bit (about 1292%) better at AF than the Radeon HD 5570. (explain)

Radeon RX 580		181008 Mtexels/sec
Radeon HD 5570		13000 Mtexels/sec
	Difference: 168008 (1292%)

Pixel Rate

The Radeon RX 580 is a lot (approximately 674%) better at anti-aliasing than the Radeon HD 5570, and should be able to handle higher screen resolutions without losing too much performance. (explain)

Radeon RX 580		40224 Mpixels/sec
Radeon HD 5570		5200 Mpixels/sec
	Difference: 35024 (674%)

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 (counted in MB per second) that can be moved over the external memory interface within a second. It's worked out by multiplying the interface width by its memory clock speed. If it uses DDR type memory, it should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are applied in one second. This number is worked out by multiplying the total texture units by the core clock 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 one second.

Pixel Rate: Pixel rate is the most pixels that the graphics card could possibly record to its local memory per second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of ROPs by the clock speed of the card. 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, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.