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Radeon HD 6850 vs Radeon RX 6500 XT

Intro

The Radeon HD 6850 has a clock frequency of 775 MHz and a GDDR5 memory frequency of 1000 MHz. It also features a 256-bit memory bus, and uses a 40 nm design. It is made up of 960 SPUs, 48 Texture Address Units, and 32 Raster Operation Units.

Compare those specs to the Radeon RX 6500 XT, which comes with core clock speeds of 2200 MHz on the GPU, and 2250 MHz on the 4096 MB of GDDR6 RAM. It features 1024 SPUs along with 64 TAUs 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

The Radeon RX 6500 XT, in theory, should be just a bit faster than the Radeon HD 6850 in general. (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 quite a bit (about 278%) more effective at anisotropic filtering than the Radeon HD 6850. (explain)

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

Pixel Rate

The Radeon RX 6500 XT is quite a bit (approximately 184%) faster with regards to FSAA than the Radeon HD 6850, and will be able to handle higher resolutions better. (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 max amount of data (measured in megabytes per second) that can be moved across the external memory interface in one second. The number is worked out by multiplying the interface width by its memory speed. If it uses DDR memory, the result should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the faster 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 number of texture map elements (texels) that can be applied in one second. This number is calculated by multiplying the total amount of texture units by the core clock speed of the chip. The higher this number, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in one second.

Pixel Rate: Pixel rate is the most pixels the video card could possibly record to the local memory per second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of Raster Operations Pipelines by the the card's clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate also depends on many other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to get to the max 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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