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Radeon HD 4870 X2 vs Radeon RX 5500 XT

Intro

The Radeon HD 4870 X2 has a core clock speed of 750 MHz and a GDDR5 memory frequency of 900 MHz. It also makes use of a 256-bit bus, and makes use of a 55 nm design. It features 800(160x5) SPUs, 40 TAUs, and 16 ROPs.

Compare all of that to the Radeon RX 5500 XT, which has core speeds of 1717 MHz on the GPU, and 1750 MHz on the 8192 MB of GDDR6 RAM. It features 1408 SPUs along with 88 TAUs and 32 ROPs.

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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

In theory, the Radeon HD 4870 X2 should perform 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 is quite a bit (about 152%) faster with regards to anisotropic 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 high levels of AA is important to you, then the Radeon RX 5500 XT is a better choice, 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

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Radeon HD 4870 X2

Amazon.com

Check prices at:

Radeon RX 5500 XT

Amazon.com

Check prices at:

Please note that the price comparisons are based on search keywords - sometimes it might show cards with very similar names that are not exactly the same as the one chosen in the comparison. We do try to filter out the wrong results as best we can, though.

Specifications

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Model Radeon HD 4870 X2 Radeon RX 5500 XT
Manufacturer AMD AMD
Year Aug 12, 2008 December 2019
Code Name R700 Navi 14 XTX
Memory 1024 MB (x2) 8192 MB
Core Speed 750 MHz (x2) 1717 MHz
Memory Speed 3600 MHz (x2) 3500 GB/s
Power (Max TDP) 350 watts 130 watts
Bandwidth 230400 MB/sec 229376 MB/sec
Texel Rate 60000 Mtexels/sec 151096 Mtexels/sec
Pixel Rate 24000 Mpixels/sec 54944 Mpixels/sec
Unified Shaders 800(160x5) (x2) 1408
Texture Mapping Units 40 (x2) 88
Render Output Units 16 (x2) 32
Bus Type GDDR5 GDDR6
Bus Width 256-bit (x2) 128-bit
Fab Process 55 nm 7 nm
Transistors 956 million 6400 million
Bus PCIe 2.0 x16 (PCIe bridge) PCIe 4.0 ×16
DirectX Version DirectX 10.1 DirectX 12
OpenGL Version OpenGL 3.0 OpenGL 4.6

Memory Bandwidth: Bandwidth is the max amount of information (counted in MB per second) that can be transferred across the external memory interface in a second. The number is worked out by multiplying the card's bus width by the speed of its memory. If it uses DDR memory, it must be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the bandwidth is, the better 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 in one second. This number is worked out by multiplying the total amount of texture units by the core speed of the chip. The better this number, the better the graphics 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 amount of pixels the graphics card can possibly write to its local memory in one second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of colour ROPs by the the card's clock speed. 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, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.

Display Prices

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Radeon HD 4870 X2

Amazon.com

Check prices at:

Radeon RX 5500 XT

Amazon.com

Check prices at:

Please note that the price comparisons are based on search keywords - sometimes it might show cards with very similar names that are not exactly the same as the one chosen in the comparison. We do try to filter out the wrong results as best we can, though.

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