Radeon HD 4870 X2 vs Radeon RX 5500 XT

Intro

Compare all of that to the Radeon RX 5500 XT, which has GPU core speed of 1717 MHz, and 8192 MB of GDDR6 memory running at 1750 MHz through a 128-bit bus. It also is comprised of 1408 Stream Processors, 88 TAUs, 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

The Radeon HD 4870 X2, in theory, should perform just a bit faster than the Radeon RX 5500 XT in general. (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 (approximately 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

The Radeon RX 5500 XT should be a lot (about 129%) faster with regards to FSAA than the Radeon HD 4870 X2, and will be capable of handling higher resolutions without losing too much performance. (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 largest amount of data (in units of megabytes per second) that can be moved over the external memory interface within a second. It is worked out by multiplying the bus width by its memory clock speed. If it uses DDR memory, the result should be multiplied by 2 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, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card can possibly write to its local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of Render Output Units by the the core speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate also depends on lots of other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the max fill rate.