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Radeon HD 4870 X2 vs Radeon RX 5500 XT

Intro

The Radeon HD 4870 X2 comes with clock speeds of 750 MHz on the GPU, and 900 MHz on the 1024 MB of GDDR5 RAM. It features 800(160x5) SPUs along with 40 Texture Address Units and 16 Rasterization Operator Units.

Compare those specs to the Radeon RX 5500 XT, which features a core clock speed of 1717 MHz and a GDDR6 memory frequency of 1750 MHz. It also uses a 128-bit memory bus, and uses a 7 nm design. It is made up of 1408 SPUs, 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 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 (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 should be capable of handling higher screen resolutions while still performing well. (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 maximum amount of data (in units of megabytes per second) that can be moved across the external memory interface in one second. It's calculated by multiplying the bus width by the speed of its memory. If the card has DDR memory, the result should 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 AA, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the most pixels that the graphics chip can possibly record to its local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the amount of ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - also called 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 - the lower the memory bandwidth is, the lower the ability 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 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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