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Radeon HD 6850 vs Radeon RX 460 2GB

Intro

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

Compare that 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 uses a 128-bit bus, and makes use of a 14 nm design. It features 896 SPUs, 56 TAUs, and 16 Raster Operation Units.

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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

As far as performance goes, the Radeon HD 6850 should in theory be a small bit better than the Radeon RX 460 2GB overall. (explain)

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

Texel Rate

The Radeon RX 460 2GB is a lot (approximately 64%) better at AF 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 is a lot (more or less 42%) better at full screen anti-aliasing than the Radeon RX 460 2GB, and should be capable of handling higher screen resolutions better. (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 maximum amount of data (counted in MB per second) that can be transferred past the external memory interface in a second. It's worked out by multiplying the card's interface width by the speed of its memory. In the case of DDR memory, it should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the most pixels that the graphics chip 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 Raster Operations Pipelines by the clock speed of the card. 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 many other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the potential 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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