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Radeon HD 6850 vs Radeon RX 6500 XT

Intro

The Radeon HD 6850 features a core clock speed of 775 MHz and a GDDR5 memory frequency of 1000 MHz. It also uses a 256-bit bus, and makes use of a 40 nm design. It is comprised of 960 SPUs, 48 TAUs, 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 speed at 2200 MHz. The GDDR6 memory runs at a speed of 2250 MHz on this specific model. It features 1024 SPUs as well as 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 6850 127 Watts
Difference: 20 Watts (19%)

Memory Bandwidth

In theory, the Radeon RX 6500 XT is 15% quicker than the Radeon HD 6850 in general, because of its higher data rate. (explain)

Radeon RX 6500 XT 147456 MB/sec
Radeon HD 6850 128000 MB/sec
Difference: 19456 (15%)

Texel Rate

The Radeon RX 6500 XT will be much (about 278%) faster with regards to AF than the Radeon HD 6850. (explain)

Radeon RX 6500 XT 140800 Mtexels/sec
Radeon HD 6850 37200 Mtexels/sec
Difference: 103600 (278%)

Pixel Rate

If using lots of anti-aliasing is important to you, then the Radeon RX 6500 XT is a better choice, by a large margin. (explain)

Radeon RX 6500 XT 70400 Mpixels/sec
Radeon HD 6850 24800 Mpixels/sec
Difference: 45600 (184%)

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 6850

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.

Specifications

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Model Radeon HD 6850 Radeon RX 6500 XT
Manufacturer AMD AMD
Year October 2010 January 2022
Code Name Barts Pro Navi 24 XT
Memory 1024 MB 4096 MB
Core Speed 775 MHz 2200 MHz
Memory Speed 4000 MHz 4500 GB/s
Power (Max TDP) 127 watts 107 watts
Bandwidth 128000 MB/sec 147456 MB/sec
Texel Rate 37200 Mtexels/sec 140800 Mtexels/sec
Pixel Rate 24800 Mpixels/sec 70400 Mpixels/sec
Unified Shaders 960 1024
Texture Mapping Units 48 64
Render Output Units 32 32
Bus Type GDDR5 GDDR6
Bus Width 256-bit 64-bit
Fab Process 40 nm 6 nm
Transistors 1700 million 5400 million
Bus PCIe x16 PCIe 4.0 x16
DirectX Version DirectX 11 DirectX 12
OpenGL Version OpenGL 4.1 OpenGL 4.6

Memory Bandwidth: Memory bandwidth is the maximum amount of data (measured in megabytes per second) that can be moved past the external memory interface in one second. It is calculated by multiplying the card's bus width by its memory clock speed. If the card has DDR type RAM, it must be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the memory bandwidth, the faster 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 amount of texture map elements (texels) that can be processed per second. This number is worked out by multiplying the total amount of texture units by the core speed of the chip. The better the texel rate, the better the 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 most pixels that the graphics chip could possibly write to the local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of Render Output Units by the the core speed of the card. 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 many other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.

Display Prices

Hide Prices

Radeon HD 6850

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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