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GeForce GTX 880M vs Radeon HD 6870

Intro

The GeForce GTX 880M has core speeds of 954 MHz on the GPU, and 1000 MHz on the 4096 MB of GDDR5 memory. It features 1536 SPUs along with 128 TAUs and 32 ROPs.

Compare those specifications to the Radeon HD 6870, which features a GPU core clock speed of 900 MHz, and 1024 MB of GDDR5 RAM running at 1050 MHz through a 256-bit bus. It also is comprised of 1120 SPUs, 56 TAUs, and 32 Raster Operation 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 6870 2870 points
Difference: 3490 (122%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 880M 130 Watts
Radeon HD 6870 151 Watts
Difference: 21 Watts (16%)

Memory Bandwidth

Theoretically speaking, the Radeon HD 6870 will be 5% quicker than the GeForce GTX 880M in general, due to its higher bandwidth. (explain)

Radeon HD 6870 134400 MB/sec
GeForce GTX 880M 128000 MB/sec
Difference: 6400 (5%)

Texel Rate

The GeForce GTX 880M should be much (approximately 142%) more effective at anisotropic filtering than the Radeon HD 6870. (explain)

GeForce GTX 880M 122112 Mtexels/sec
Radeon HD 6870 50400 Mtexels/sec
Difference: 71712 (142%)

Pixel Rate

If using high levels of AA is important to you, then the GeForce GTX 880M is the winner, though only just barely. (explain)

GeForce GTX 880M 30528 Mpixels/sec
Radeon HD 6870 28800 Mpixels/sec
Difference: 1728 (6%)

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 6870

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 6870
Manufacturer nVidia AMD
Year March 12 2014 October 2010
Code Name GK104 Barts XT
Memory 4096 MB 1024 MB
Core Speed 954 MHz 900 MHz
Memory Speed 4000 MHz 4200 MHz
Power (Max TDP) 130 watts 151 watts
Bandwidth 128000 MB/sec 134400 MB/sec
Texel Rate 122112 Mtexels/sec 50400 Mtexels/sec
Pixel Rate 30528 Mpixels/sec 28800 Mpixels/sec
Unified Shaders 1536 1120
Texture Mapping Units 128 56
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: Bandwidth is the largest amount of information (measured in megabytes per second) that can be moved past the external memory interface in one second. It's worked out by multiplying the bus width by the speed of its memory. In the case of DDR type RAM, the result should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be processed in one second. This number is worked out by multiplying the total number of 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 in one second.

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card could possibly write to the local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the number of ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate also depends on many other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to get to the max fill rate.

Display Prices

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GeForce GTX 880M

Amazon.com

Check prices at:

Radeon HD 6870

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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