Radeon RX 5500 XT vs Radeon RX 580

Intro

Compare all of that to the Radeon RX 580, which has a GPU core clock speed of 1257 MHz, and 8192 MB of GDDR5 memory running at 2000 MHz through a 256-bit bus. It also is made up of 2304 SPUs, 144 Texture Address Units, and 32 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 5500 XT		130 Watts
Radeon RX 580		185 Watts
	Difference: 55 Watts (42%)

Memory Bandwidth

Theoretically, the Radeon RX 580 should be a small bit faster than the Radeon RX 5500 XT in general. (explain)

Radeon RX 580		262144 MB/sec
Radeon RX 5500 XT		229376 MB/sec
	Difference: 32768 (14%)

Texel Rate

The Radeon RX 580 should be just a bit (about 20%) more effective at AF than the Radeon RX 5500 XT. (explain)

Radeon RX 580		181008 Mtexels/sec
Radeon RX 5500 XT		151096 Mtexels/sec
	Difference: 29912 (20%)

Pixel Rate

The Radeon RX 5500 XT should be quite a bit (about 37%) better at AA than the Radeon RX 580, and also will be able to handle higher screen resolutions better. (explain)

Radeon RX 5500 XT		54944 Mpixels/sec
Radeon RX 580		40224 Mpixels/sec
	Difference: 14720 (37%)

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 (measured in megabytes per second) that can be transported past the external memory interface in a second. The number is calculated by multiplying the card's interface width by its memory speed. If it uses DDR memory, it must be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, 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 number is worked out by multiplying the total amount of texture units of the card by the core speed of the chip. The better the texel rate, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in a second.

Pixel Rate: Pixel rate is the most pixels the video card can possibly record to the local memory in a second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of colour ROPs by the clock 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 also depends on many other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.