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Radeon HD 4870 X2 vs Radeon RX 5500

Intro

The Radeon HD 4870 X2 features 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 is made up of 800(160x5) SPUs, 40 Texture Address Units, and 16 Raster Operation Units.

Compare those specs to the Radeon RX 5500, which uses a 7 nm design. AMD has set the core speed at 1670 MHz. The GDDR6 memory runs at a speed of 1750 MHz on this card. It features 1408 SPUs as well as 88 Texture Address Units and 32 ROPs.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 5500 150 Watts
Radeon HD 4870 X2 350 Watts
Difference: 200 Watts (133%)

Memory Bandwidth

In theory, the Radeon HD 4870 X2 is 0% faster than the Radeon RX 5500 in general, due to its greater data rate. (explain)

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

Texel Rate

The Radeon RX 5500 should be a lot (about 145%) faster with regards to texture filtering than the Radeon HD 4870 X2. (explain)

Radeon RX 5500 146960 Mtexels/sec
Radeon HD 4870 X2 60000 Mtexels/sec
Difference: 86960 (145%)

Pixel Rate

The Radeon RX 5500 is much (approximately 123%) more effective at FSAA than the Radeon HD 4870 X2, and also will be capable of handling higher screen resolutions without slowing down too much. (explain)

Radeon RX 5500 53440 Mpixels/sec
Radeon HD 4870 X2 24000 Mpixels/sec
Difference: 29440 (123%)

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

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
Manufacturer AMD AMD
Year Aug 12, 2008 October 2019
Code Name R700 Navi 14 XT
Memory 1024 MB (x2) 4096 MB
Core Speed 750 MHz (x2) 1670 MHz
Memory Speed 3600 MHz (x2) 3500 GB/s
Power (Max TDP) 350 watts 150 watts
Bandwidth 230400 MB/sec 229376 MB/sec
Texel Rate 60000 Mtexels/sec 146960 Mtexels/sec
Pixel Rate 24000 Mpixels/sec 53440 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: 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 card's bus width by the speed of its memory. If the card has DDR RAM, it should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card could possibly record to the local memory in one second - measured in millions of pixels per second. The figure is worked out by multiplying the number of Raster Operations Pipelines by the the card's clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate is also dependant on lots of other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to get to the max fill rate.

Display Prices

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Radeon HD 4870 X2

Amazon.com

Check prices at:

Radeon RX 5500

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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