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Radeon HD 5870 vs Radeon RX 6500 XT

Intro

The Radeon HD 5870 comes with a GPU core clock speed of 850 MHz, and the 1024 MB of GDDR5 RAM is set to run at 1200 MHz through a 256-bit bus. It also is comprised of 1600(320x5) SPUs, 80 Texture Address Units, and 32 Raster Operation Units.

Compare those specifications to the Radeon RX 6500 XT, which makes use of a 6 nm design. AMD has set the core frequency at 2200 MHz. The GDDR6 memory is set to run at a frequency of 2250 MHz on this particular card. It features 1024 SPUs along with 64 Texture Address Units and 32 ROPs.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 6500 XT 107 Watts
Radeon HD 5870 188 Watts
Difference: 81 Watts (76%)

Memory Bandwidth

The Radeon HD 5870, in theory, should be a bit faster than the Radeon RX 6500 XT overall. (explain)

Radeon HD 5870 153600 MB/sec
Radeon RX 6500 XT 147456 MB/sec
Difference: 6144 (4%)

Texel Rate

The Radeon RX 6500 XT will be a lot (approximately 107%) more effective at texture filtering than the Radeon HD 5870. (explain)

Radeon RX 6500 XT 140800 Mtexels/sec
Radeon HD 5870 68000 Mtexels/sec
Difference: 72800 (107%)

Pixel Rate

If using a high resolution is important to you, then the Radeon RX 6500 XT is a better choice, by far. (explain)

Radeon RX 6500 XT 70400 Mpixels/sec
Radeon HD 5870 27200 Mpixels/sec
Difference: 43200 (159%)

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.

Price Comparison

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Radeon HD 5870

Amazon.com

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Radeon RX 6500 XT

Amazon.com

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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 5870 Radeon RX 6500 XT
Manufacturer AMD AMD
Year September 23, 2009 January 2022
Code Name Cypress XT Navi 24 XT
Memory 1024 MB 4096 MB
Core Speed 850 MHz 2200 MHz
Memory Speed 4800 MHz 4500 GB/s
Power (Max TDP) 188 watts 107 watts
Bandwidth 153600 MB/sec 147456 MB/sec
Texel Rate 68000 Mtexels/sec 140800 Mtexels/sec
Pixel Rate 27200 Mpixels/sec 70400 Mpixels/sec
Unified Shaders 1600(320x5) 1024
Texture Mapping Units 80 64
Render Output Units 32 32
Bus Type GDDR5 GDDR6
Bus Width 256-bit 64-bit
Fab Process 40 nm 6 nm
Transistors 2154 million 5400 million
Bus PCIe 2.1 x16 PCIe 4.0 x16
DirectX Version DirectX 11 DirectX 12
OpenGL Version OpenGL 3.2 OpenGL 4.6

Memory Bandwidth: Bandwidth is the max amount of information (measured in megabytes per second) that can be moved across the external memory interface in a second. It is worked out by multiplying the bus width by its memory speed. If the card has 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 AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are processed per second. This number is worked out by multiplying the total amount of texture units of the card by the core 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 in a second.

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card could possibly write to the local memory in a second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate also depends on quite a few other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.

Display Prices

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Radeon HD 5870

Amazon.com

Check prices at:

Radeon RX 6500 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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