Radeon HD 4870 X2 vs Radeon RX 5500 XT

Intro

Compare all that to the Radeon RX 5500 XT, which features a core clock speed of 1717 MHz and a GDDR6 memory speed of 1750 MHz. It also makes use of a 128-bit bus, and uses a 7 nm design. It is comprised of 1408 SPUs, 88 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 HD 4870 X2		350 Watts
	Difference: 220 Watts (169%)

Memory Bandwidth

Theoretically speaking, the Radeon HD 4870 X2 should perform just a bit faster than the Radeon RX 5500 XT overall. (explain)

Radeon HD 4870 X2		230400 MB/sec
Radeon RX 5500 XT		229376 MB/sec
	Difference: 1024 (0%)

Texel Rate

The Radeon RX 5500 XT should be a lot (more or less 152%) faster with regards to texture filtering than the Radeon HD 4870 X2. (explain)

Radeon RX 5500 XT		151096 Mtexels/sec
Radeon HD 4870 X2		60000 Mtexels/sec
	Difference: 91096 (152%)

Pixel Rate

If running with a high resolution is important to you, then the Radeon RX 5500 XT is a better choice, by a large margin. (explain)

Radeon RX 5500 XT		54944 Mpixels/sec
Radeon HD 4870 X2		24000 Mpixels/sec
	Difference: 30944 (129%)

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.

One or more cards in this comparison are multi-core. This means that their bandwidth, texel and pixel rates are theoretically doubled - this does not mean the card will actually perform twice as fast, but only that it should in theory be able to. Actual game benchmarks will give a more accurate idea of what it's capable of.

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 within a second. It's worked out by multiplying the card's bus width by its memory speed. If it uses DDR RAM, it must be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, 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 number of texture map elements (texels) that are processed per second. This figure is worked out by multiplying the total number of texture units of the card by the core speed of the chip. The higher this number, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied per second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip can possibly write to the local memory per second - measured in millions of pixels per second. The figure is worked out by multiplying the number of Raster Operations Pipelines by the the core speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate also depends on lots of other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to reach the max fill rate.