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GeForce GTX 870M vs Radeon HD 6950 2GB

Intro

The GeForce GTX 870M comes with a GPU core clock speed of 941 MHz, and the 3072 MB of GDDR5 memory is set to run at 1000 MHz through a 192-bit bus. It also features 1344 Stream Processors, 112 Texture Address Units, and 24 ROPs.

Compare all that to the Radeon HD 6950 2GB, which comes with core clock speeds of 800 MHz on the GPU, and 1250 MHz on the 2048 MB of GDDR5 memory. It features 1408 SPUs as well as 88 Texture Address Units and 32 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 870M 110 Watts
Radeon HD 6950 2GB 200 Watts
Difference: 90 Watts (82%)

Memory Bandwidth

As far as performance goes, the Radeon HD 6950 2GB should theoretically be a lot better than the GeForce GTX 870M overall. (explain)

Radeon HD 6950 2GB 160000 MB/sec
GeForce GTX 870M 96000 MB/sec
Difference: 64000 (67%)

Texel Rate

The GeForce GTX 870M is a lot (approximately 50%) better at texture filtering than the Radeon HD 6950 2GB. (explain)

GeForce GTX 870M 105392 Mtexels/sec
Radeon HD 6950 2GB 70400 Mtexels/sec
Difference: 34992 (50%)

Pixel Rate

The Radeon HD 6950 2GB is a small bit (about 13%) faster with regards to anti-aliasing than the GeForce GTX 870M, and will be able to handle higher screen resolutions more effectively. (explain)

Radeon HD 6950 2GB 25600 Mpixels/sec
GeForce GTX 870M 22584 Mpixels/sec
Difference: 3016 (13%)

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 870M

Amazon.com

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Radeon HD 6950 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 GeForce GTX 870M Radeon HD 6950 2GB
Manufacturer nVidia AMD
Year March 12 2014 December 2010
Code Name GK104 Cayman Pro
Memory 3072 MB 2048 MB
Core Speed 941 MHz 800 MHz
Memory Speed 4000 MHz 5000 MHz
Power (Max TDP) 110 watts 200 watts
Bandwidth 96000 MB/sec 160000 MB/sec
Texel Rate 105392 Mtexels/sec 70400 Mtexels/sec
Pixel Rate 22584 Mpixels/sec 25600 Mpixels/sec
Unified Shaders 1344 1408
Texture Mapping Units 112 88
Render Output Units 24 32
Bus Type GDDR5 GDDR5
Bus Width 192-bit 256-bit
Fab Process 28 nm 40 nm
Transistors (Unknown) million 2640 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 largest amount of information (counted in megabytes per second) that can be transported over the external memory interface in one second. It's worked out by multiplying the card's interface width by the speed of its memory. If it uses DDR RAM, it should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the bandwidth is, 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 amount of texture map elements (texels) that are processed per second. This figure is calculated by multiplying the total number of texture units of the card by the core clock speed of the chip. The higher this number, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels per second.

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

Display Prices

Hide Prices

GeForce GTX 870M

Amazon.com

Check prices at:

Radeon HD 6950 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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