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GeForce GTX 880M vs Radeon HD 6850

Intro

The GeForce GTX 880M uses a 28 nm design. nVidia has clocked the core frequency at 954 MHz. The GDDR5 memory is set to run at a speed of 1000 MHz on this model. It features 1536 SPUs along with 128 TAUs and 32 ROPs.

Compare those specifications to the Radeon HD 6850, which features core speeds of 775 MHz on the GPU, and 1000 MHz on the 1024 MB of GDDR5 RAM. It features 960 SPUs along with 48 Texture Address Units and 32 Rasterization Operator Units.

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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 880M 6360 points
Radeon HD 6850 2395 points
Difference: 3965 (166%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6850 127 Watts
GeForce GTX 880M 130 Watts
Difference: 3 Watts (2%)

Memory Bandwidth

Both cards have exactly the same bandwidth, so in theory they should have the same performance. (explain)

Texel Rate

The GeForce GTX 880M will be a lot (more or less 228%) faster with regards to AF than the Radeon HD 6850. (explain)

GeForce GTX 880M 122112 Mtexels/sec
Radeon HD 6850 37200 Mtexels/sec
Difference: 84912 (228%)

Pixel Rate

The GeForce GTX 880M should be a lot (about 23%) faster with regards to AA than the Radeon HD 6850, and will be able to handle higher resolutions while still performing well. (explain)

GeForce GTX 880M 30528 Mpixels/sec
Radeon HD 6850 24800 Mpixels/sec
Difference: 5728 (23%)

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 880M

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 880M Radeon HD 6850
Manufacturer nVidia AMD
Year March 12 2014 October 2010
Code Name GK104 Barts Pro
Memory 4096 MB 1024 MB
Core Speed 954 MHz 775 MHz
Memory Speed 4000 MHz 4000 MHz
Power (Max TDP) 130 watts 127 watts
Bandwidth 128000 MB/sec 128000 MB/sec
Texel Rate 122112 Mtexels/sec 37200 Mtexels/sec
Pixel Rate 30528 Mpixels/sec 24800 Mpixels/sec
Unified Shaders 1536 960
Texture Mapping Units 128 48
Render Output Units 32 32
Bus Type GDDR5 GDDR5
Bus Width 256-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: Memory bandwidth is the max amount of information (counted in megabytes per second) that can be transferred across the external memory interface in one second. The number is calculated by multiplying the bus width by its memory clock speed. If it uses DDR type memory, the result should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card can possibly record to the local memory in one second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of Render Output Units by the the core clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate is also dependant on quite a few other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to reach the maximum fill rate.

Display Prices

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GeForce GTX 880M

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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