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Radeon HD 4870 X2 vs Radeon RX 5500

Intro

The Radeon HD 4870 X2 makes use of a 55 nm design. AMD has set the core speed at 750 MHz. The GDDR5 RAM is set to run at a speed of 900 MHz on this specific model. It features 800(160x5) SPUs as well as 40 TAUs and 16 ROPs.

Compare all of that to the Radeon RX 5500, which makes use of a 7 nm design. AMD has clocked the core frequency at 1670 MHz. The GDDR6 RAM is set to run at a speed of 1750 MHz on this particular card. It features 1408 SPUs along with 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

Performance-wise, the Radeon HD 4870 X2 should theoretically be a small bit better than the Radeon RX 5500 overall. (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 (more or less 145%) more effective at AF 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 will be much (approximately 123%) faster with regards to anti-aliasing than the Radeon HD 4870 X2, and capable of handling higher resolutions more effectively. (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: Bandwidth is the largest amount of information (counted in megabytes per second) that can be transferred across the external memory interface in one second. The number is calculated by multiplying the interface width by its memory speed. If it uses DDR RAM, it should be multiplied by 2 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, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be applied in one second. This number is worked out by multiplying the total number of texture units by the core 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 most pixels the graphics card can possibly record to the local memory in a second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of colour ROPs by the the core clock speed. 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 fill rate also depends on lots of other factors, most notably the memory bandwidth - the lower the 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

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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