Radeon HD 7870 XT vs Radeon RX 5500 XT

Intro

Compare all of that to the Radeon RX 5500 XT, which comes with GPU core speed of 1717 MHz, and 8192 MB of GDDR6 memory set to run at 1750 MHz through a 128-bit bus. It also is made up of 1408 SPUs, 88 TAUs, and 32 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 5500 XT		130 Watts
Radeon HD 7870 XT		185 Watts
	Difference: 55 Watts (42%)

Memory Bandwidth

In theory, the Radeon RX 5500 XT should perform a bit faster than the Radeon HD 7870 XT overall. (explain)

Radeon RX 5500 XT		229376 MB/sec
Radeon HD 7870 XT		192000 MB/sec
	Difference: 37376 (19%)

Texel Rate

The Radeon RX 5500 XT should be much (approximately 70%) more effective at texture filtering than the Radeon HD 7870 XT. (explain)

Radeon RX 5500 XT		151096 Mtexels/sec
Radeon HD 7870 XT		88800 Mtexels/sec
	Difference: 62296 (70%)

Pixel Rate

If using a high resolution is important to you, then the Radeon RX 5500 XT is superior to the Radeon HD 7870 XT, by far. (explain)

Radeon RX 5500 XT		54944 Mpixels/sec
Radeon HD 7870 XT		29600 Mpixels/sec
	Difference: 25344 (86%)

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 max amount of information (in units of MB per second) that can be moved past the external memory interface in a second. The number is calculated by multiplying the card's interface width by its memory clock speed. If it uses DDR type RAM, the result should be multiplied by 2 again. If DDR5, multiply by 4 instead. The better the card's 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 applied per second. This is worked out by multiplying the total number of texture units by the core speed of the chip. The higher the texel rate, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in one second.

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card can possibly record to the local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the number of colour ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate is also dependant on lots of other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to get to the max fill rate.