Radeon HD 4870 X2 vs Radeon RX 5500 XT

Intro

Compare that to the Radeon RX 5500 XT, which comes with GPU core speed of 1717 MHz, and 8192 MB of GDDR6 memory running at 1750 MHz through a 128-bit bus. It also features 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 4870 X2		350 Watts
	Difference: 220 Watts (169%)

Memory Bandwidth

Theoretically speaking, the Radeon HD 4870 X2 should perform a little 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 is quite a bit (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 using a high screen resolution is important to you, then the Radeon RX 5500 XT is the winner, by far. (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 (counted in megabytes per second) that can be transferred across the external memory interface in one second. The number is calculated by multiplying the bus width by its memory speed. If it uses DDR type RAM, it must be multiplied by 2 again. If DDR5, multiply by 4 instead. The better 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 amount of texture map elements (texels) that can be applied in one second. This is worked out by multiplying the total texture units by the core clock speed of the chip. The better this number, the better the card will be at handling 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 video card can possibly write to its local memory in a second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of Raster Operations Pipelines by the the core speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate also depends 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 max fill rate.