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GeForce GTX 870M vs Radeon HD 6750 1GB

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 is made up of 1344 Stream Processors, 112 Texture Address Units, and 24 ROPs.

Compare those specs to the Radeon HD 6750 1GB, which has core clock speeds of 725 MHz on the GPU, and 1000 MHz on the 1024 MB of GDDR5 RAM. It features 720 SPUs as well as 36 Texture Address Units and 16 ROPs.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6750 1GB 86 Watts
GeForce GTX 870M 110 Watts
Difference: 24 Watts (28%)

Memory Bandwidth

The GeForce GTX 870M, in theory, should perform a lot faster than the Radeon HD 6750 1GB overall. (explain)

GeForce GTX 870M 96000 MB/sec
Radeon HD 6750 1GB 64000 MB/sec
Difference: 32000 (50%)

Texel Rate

The GeForce GTX 870M should be a lot (approximately 304%) more effective at anisotropic filtering than the Radeon HD 6750 1GB. (explain)

GeForce GTX 870M 105392 Mtexels/sec
Radeon HD 6750 1GB 26100 Mtexels/sec
Difference: 79292 (304%)

Pixel Rate

The GeForce GTX 870M will be a lot (about 95%) faster with regards to anti-aliasing than the Radeon HD 6750 1GB, and also will be capable of handling higher screen resolutions more effectively. (explain)

GeForce GTX 870M 22584 Mpixels/sec
Radeon HD 6750 1GB 11600 Mpixels/sec
Difference: 10984 (95%)

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 6750 1GB

Amazon.com

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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 6750 1GB
Manufacturer nVidia AMD
Year March 12 2014 January 2011
Code Name GK104 Juniper Pro
Memory 3072 MB 1024 MB
Core Speed 941 MHz 725 MHz
Memory Speed 4000 MHz 4000 MHz
Power (Max TDP) 110 watts 86 watts
Bandwidth 96000 MB/sec 64000 MB/sec
Texel Rate 105392 Mtexels/sec 26100 Mtexels/sec
Pixel Rate 22584 Mpixels/sec 11600 Mpixels/sec
Unified Shaders 1344 720
Texture Mapping Units 112 36
Render Output Units 24 16
Bus Type GDDR5 GDDR5
Bus Width 192-bit 128-bit
Fab Process 28 nm 40 nm
Transistors (Unknown) million 1040 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 information (counted in megabytes per second) that can be moved across the external memory interface in a second. It is worked out by multiplying the bus width by its memory clock speed. If it uses DDR type RAM, it should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the bandwidth is, the faster the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be applied per second. This is calculated by multiplying the total number of texture units by the core speed of the chip. The higher the texel rate, the better the graphics 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 maximum number of pixels that the graphics card could possibly write to the local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the amount of colour ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate is also dependant on lots of other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to get to the maximum fill rate.

Display Prices

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GeForce GTX 870M

Amazon.com

Check prices at:

Radeon HD 6750 1GB

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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