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GeForce GTX 850M vs Radeon HD 6850

Intro

The GeForce GTX 850M comes with core speeds of 876 MHz on the GPU, and 1000 MHz on the 2048 MB of DDR3 RAM. It features 640 SPUs as well as 40 TAUs and 16 ROPs.

Compare that to the Radeon HD 6850, which comes with a core clock frequency of 775 MHz and a GDDR5 memory speed of 1000 MHz. It also uses a 256-bit bus, and uses a 40 nm design. It features 960 SPUs, 48 Texture Address Units, and 32 ROPs.

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Benchmarks

These are real-world performance benchmarks that were submitted by Hardware Compare users. The scores seen here are the average of all benchmarks submitted for each respective test and hardware.

3DMark Fire Strike Graphics Score

GeForce GTX 850M 3340 points
Radeon HD 6850 2395 points
Difference: 945 (39%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 850M 40 Watts
Radeon HD 6850 127 Watts
Difference: 87 Watts (218%)

Memory Bandwidth

Theoretically, the Radeon HD 6850 should perform quite a bit faster than the GeForce GTX 850M overall. (explain)

Radeon HD 6850 128000 MB/sec
GeForce GTX 850M 32000 MB/sec
Difference: 96000 (300%)

Texel Rate

The Radeon HD 6850 will be just a bit (about 6%) faster with regards to texture filtering than the GeForce GTX 850M. (explain)

Radeon HD 6850 37200 Mtexels/sec
GeForce GTX 850M 35040 Mtexels/sec
Difference: 2160 (6%)

Pixel Rate

The Radeon HD 6850 should be a lot (about 77%) better at FSAA than the GeForce GTX 850M, and also should be capable of handling higher resolutions more effectively. (explain)

Radeon HD 6850 24800 Mpixels/sec
GeForce GTX 850M 14016 Mpixels/sec
Difference: 10784 (77%)

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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GeForce GTX 850M

Amazon.com

Check prices at:

Radeon HD 6850

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 GeForce GTX 850M Radeon HD 6850
Manufacturer nVidia AMD
Year March 12 2014 October 2010
Code Name GM107 Barts Pro
Memory 2048 MB 1024 MB
Core Speed 876 MHz 775 MHz
Memory Speed 2000 MHz 4000 MHz
Power (Max TDP) 40 watts 127 watts
Bandwidth 32000 MB/sec 128000 MB/sec
Texel Rate 35040 Mtexels/sec 37200 Mtexels/sec
Pixel Rate 14016 Mpixels/sec 24800 Mpixels/sec
Unified Shaders 640 960
Texture Mapping Units 40 48
Render Output Units 16 32
Bus Type DDR3 GDDR5
Bus Width 128-bit 256-bit
Fab Process 28 nm 40 nm
Transistors (Unknown) million 1700 million
Bus PCIe 3.0 x16 PCIe x16
DirectX Version DirectX 12 DirectX 11
OpenGL Version OpenGL 4.5 OpenGL 4.1

Memory Bandwidth: Bandwidth is the max amount of data (measured in megabytes per second) that can be transferred past the external memory interface in one second. It's worked out by multiplying the card's interface width by its memory speed. If the card has DDR RAM, it must be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the faster the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the most pixels that the graphics chip can possibly write 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 fill rate also depends on quite a few 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

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GeForce GTX 850M

Amazon.com

Check prices at:

Radeon HD 6850

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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