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Radeon HD 6850 vs Radeon R9 M290X

Intro

The Radeon HD 6850 makes use of a 40 nm design. AMD has clocked the core frequency at 775 MHz. The GDDR5 memory runs at a frequency of 1000 MHz on this card. It features 960 SPUs along with 48 Texture Address Units and 32 ROPs.

Compare that to the Radeon R9 M290X, which comes with core clock speeds of 850 MHz on the GPU, and 1200 MHz on the 4096 MB of GDDR5 memory. It features 1280 SPUs along with 80 TAUs and 32 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R9 M290X 100 Watts
Radeon HD 6850 127 Watts
Difference: 27 Watts (27%)

Memory Bandwidth

Theoretically, the Radeon R9 M290X should perform just a bit faster than the Radeon HD 6850 in general. (explain)

Radeon R9 M290X 153600 MB/sec
Radeon HD 6850 128000 MB/sec
Difference: 25600 (20%)

Texel Rate

The Radeon R9 M290X should be much (about 83%) more effective at anisotropic filtering than the Radeon HD 6850. (explain)

Radeon R9 M290X 68000 Mtexels/sec
Radeon HD 6850 37200 Mtexels/sec
Difference: 30800 (83%)

Pixel Rate

If running with high levels of AA is important to you, then the Radeon R9 M290X is superior to the Radeon HD 6850, but only just. (explain)

Radeon R9 M290X 27200 Mpixels/sec
Radeon HD 6850 24800 Mpixels/sec
Difference: 2400 (10%)

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 R9 M290X

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 R9 M290X
Manufacturer AMD AMD
Year October 2010 May 1 2014
Code Name Barts Pro Neptune XT
Memory 1024 MB 4096 MB
Core Speed 775 MHz 850 MHz
Memory Speed 4000 MHz 4800 MHz
Power (Max TDP) 127 watts 100 watts
Bandwidth 128000 MB/sec 153600 MB/sec
Texel Rate 37200 Mtexels/sec 68000 Mtexels/sec
Pixel Rate 24800 Mpixels/sec 27200 Mpixels/sec
Unified Shaders 960 1280
Texture Mapping Units 48 80
Render Output Units 32 32
Bus Type GDDR5 GDDR5
Bus Width 256-bit 256-bit
Fab Process 40 nm 28 nm
Transistors 1700 million (Unknown) million
Bus PCIe x16 PCIe 3.0 x16
DirectX Version DirectX 11 DirectX 11.2
OpenGL Version OpenGL 4.1 OpenGL 4.3

Memory Bandwidth: Memory bandwidth is the largest amount of data (in units of MB per second) that can be transferred over 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 type RAM, the result should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the card's 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 texture map elements (texels) that are applied per second. This number is calculated by multiplying the total number of texture units of the card by the core clock speed of the chip. The higher the texel rate, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed per second.

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

Display Prices

Hide Prices

Radeon HD 6850

Amazon.com

Check prices at:

Radeon R9 M290X

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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