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Radeon HD 6850 vs Radeon RX 460 2GB

Intro

The Radeon HD 6850 features a clock speed of 775 MHz and a GDDR5 memory frequency of 1000 MHz. It also makes use of a 256-bit bus, and uses a 40 nm design. It features 960 SPUs, 48 TAUs, and 32 Raster Operation Units.

Compare those specs to the Radeon RX 460 2GB, which comes with a core clock speed of 1090 MHz and a GDDR5 memory frequency of 1750 MHz. It also features a 128-bit bus, and uses a 14 nm design. It is comprised of 896 SPUs, 56 Texture Address Units, and 16 ROPs.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 460 2GB 75 Watts
Radeon HD 6850 127 Watts
Difference: 52 Watts (69%)

Memory Bandwidth

In theory, the Radeon HD 6850 will be 14% faster than the Radeon RX 460 2GB in general, because of its higher bandwidth. (explain)

Radeon HD 6850 128000 MB/sec
Radeon RX 460 2GB 112000 MB/sec
Difference: 16000 (14%)

Texel Rate

The Radeon RX 460 2GB will be a lot (approximately 64%) better at anisotropic filtering than the Radeon HD 6850. (explain)

Radeon RX 460 2GB 61040 Mtexels/sec
Radeon HD 6850 37200 Mtexels/sec
Difference: 23840 (64%)

Pixel Rate

The Radeon HD 6850 will be quite a bit (about 42%) more effective at AA than the Radeon RX 460 2GB, and able to handle higher screen resolutions without losing too much performance. (explain)

Radeon HD 6850 24800 Mpixels/sec
Radeon RX 460 2GB 17440 Mpixels/sec
Difference: 7360 (42%)

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 460 2GB

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 460 2GB
Manufacturer AMD AMD
Year October 2010 August 2016
Code Name Barts Pro Polaris 11
Memory 1024 MB 2048 MB
Core Speed 775 MHz 1090 MHz
Memory Speed 4000 MHz 7000 MHz
Power (Max TDP) 127 watts 75 watts
Bandwidth 128000 MB/sec 112000 MB/sec
Texel Rate 37200 Mtexels/sec 61040 Mtexels/sec
Pixel Rate 24800 Mpixels/sec 17440 Mpixels/sec
Unified Shaders 960 896
Texture Mapping Units 48 56
Render Output Units 32 16
Bus Type GDDR5 GDDR5
Bus Width 256-bit 128-bit
Fab Process 40 nm 14 nm
Transistors 1700 million 3000 million
Bus PCIe x16 PCIe 3.0 x16
DirectX Version DirectX 11 DirectX 12.0
OpenGL Version OpenGL 4.1 OpenGL 4.5

Memory Bandwidth: Bandwidth is the largest amount of data (measured in megabytes per second) that can be transported across the external memory interface in one second. It is calculated by multiplying the bus width by its memory speed. If it uses 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 AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are applied per second. This number is calculated by multiplying the total number of texture units by the core speed of the chip. The better this number, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels the video card can possibly record to its local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the amount of Render Output Units by the the card's clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate also depends on many other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.

Display Prices

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Radeon HD 6850

Amazon.com

Check prices at:

Radeon RX 460 2GB

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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