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Radeon HD 6850 vs Radeon R9 M290X

Intro

The Radeon HD 6850 features clock speeds of 775 MHz on the GPU, and 1000 MHz on the 1024 MB of GDDR5 RAM. It features 960 SPUs along with 48 TAUs and 32 ROPs.

Compare all of that to the Radeon R9 M290X, which uses a 28 nm design. AMD has clocked the core frequency at 850 MHz. The GDDR5 RAM runs at a speed of 1200 MHz on this specific model. It features 1280 SPUs as well as 80 Texture Address Units and 32 ROPs.

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 speaking, the Radeon R9 M290X is 20% quicker than the Radeon HD 6850 in general, because of its greater bandwidth. (explain)

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

Texel Rate

The Radeon R9 M290X will be a lot (more or less 83%) more effective at AF than the Radeon HD 6850. (explain)

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

Pixel Rate

The Radeon R9 M290X will be a bit (about 10%) better at AA than the Radeon HD 6850, and able to handle higher screen resolutions without slowing down too much. (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 max amount of information (counted in MB per second) that can be transported past the external memory interface in a second. The number is calculated by multiplying the bus width by its memory speed. If the card has DDR type memory, it must 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 AA, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the most pixels that the graphics chip can possibly write to its local memory in a second - measured in millions of pixels per second. The figure is worked out by multiplying the number of ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate also depends on many other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability 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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