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GeForce GTX 980M vs Radeon HD 6870

Intro

The GeForce GTX 980M comes with a clock frequency of 1038 MHz and a GDDR5 memory frequency of 1000 MHz. It also makes use of a 256-bit memory bus, and uses a 28 nm design. It is comprised of 1536 SPUs, 96 TAUs, and 64 Raster Operation Units.

Compare all that to the Radeon HD 6870, which has GPU clock speed of 900 MHz, and 1024 MB of GDDR5 RAM set to run at 1050 MHz through a 256-bit bus. It also features 1120 Stream Processors, 56 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 980M 9476 points
Radeon HD 6870 2870 points
Difference: 6606 (230%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 980M 100 Watts
Radeon HD 6870 151 Watts
Difference: 51 Watts (51%)

Memory Bandwidth

Theoretically speaking, the Radeon HD 6870 is 5% quicker than the GeForce GTX 980M overall, because of its greater data rate. (explain)

Radeon HD 6870 134400 MB/sec
GeForce GTX 980M 128000 MB/sec
Difference: 6400 (5%)

Texel Rate

The GeForce GTX 980M will be quite a bit (approximately 98%) more effective at anisotropic filtering than the Radeon HD 6870. (explain)

GeForce GTX 980M 99648 Mtexels/sec
Radeon HD 6870 50400 Mtexels/sec
Difference: 49248 (98%)

Pixel Rate

The GeForce GTX 980M will be quite a bit (more or less 131%) faster with regards to full screen anti-aliasing than the Radeon HD 6870, and also capable of handling higher resolutions without slowing down too much. (explain)

GeForce GTX 980M 66432 Mpixels/sec
Radeon HD 6870 28800 Mpixels/sec
Difference: 37632 (131%)

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 980M

Amazon.com

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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 980M Radeon HD 6870
Manufacturer nVidia AMD
Year October 7 2014 October 2010
Code Name GM204 Barts XT
Memory 4096 MB 1024 MB
Core Speed 1038 MHz 900 MHz
Memory Speed 4000 MHz 4200 MHz
Power (Max TDP) 100 watts 151 watts
Bandwidth 128000 MB/sec 134400 MB/sec
Texel Rate 99648 Mtexels/sec 50400 Mtexels/sec
Pixel Rate 66432 Mpixels/sec 28800 Mpixels/sec
Unified Shaders 1536 1120
Texture Mapping Units 96 56
Render Output Units 64 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 data (counted in MB per second) that can be moved past the external memory interface in one second. The number is calculated by multiplying the card's interface width by its memory speed. If the card has DDR memory, the result should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the better the card will be in general. It especially helps with AA, High Dynamic Range 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 worked out by multiplying the total number of texture units of the card by the core speed of the chip. The better this number, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in a second.

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

Display Prices

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GeForce GTX 980M

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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