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GeForce GTX 660 vs GeForce GTX 980M

Intro

The GeForce GTX 660 comes with a GPU core clock speed of 980 MHz, and the 2048 MB of GDDR5 memory is set to run at 1502 MHz through a 192-bit bus. It also is comprised of 960 Stream Processors, 80 TAUs, and 24 Raster Operation Units.

Compare all that to the GeForce GTX 980M, which has core clock speeds of 1038 MHz on the GPU, and 1000 MHz on the 4096 MB of GDDR5 RAM. It features 1536 SPUs along with 96 TAUs and 64 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 980M 9476 points
GeForce GTX 660 5063 points
Difference: 4413 (87%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 980M 100 Watts
GeForce GTX 660 140 Watts
Difference: 40 Watts (40%)

Memory Bandwidth

The GeForce GTX 660 should theoretically perform a small bit faster than the GeForce GTX 980M in general. (explain)

GeForce GTX 660 144192 MB/sec
GeForce GTX 980M 128000 MB/sec
Difference: 16192 (13%)

Texel Rate

The GeForce GTX 980M will be a lot (about 27%) better at AF than the GeForce GTX 660. (explain)

GeForce GTX 980M 99648 Mtexels/sec
GeForce GTX 660 78400 Mtexels/sec
Difference: 21248 (27%)

Pixel Rate

If running with high levels of AA is important to you, then the GeForce GTX 980M is the winner, by a large margin. (explain)

GeForce GTX 980M 66432 Mpixels/sec
GeForce GTX 660 23520 Mpixels/sec
Difference: 42912 (182%)

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 660

Amazon.com

Check prices at:

GeForce GTX 980M

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 660 GeForce GTX 980M
Manufacturer nVidia nVidia
Year September 2012 October 7 2014
Code Name GK106 GM204
Memory 2048 MB 4096 MB
Core Speed 980 MHz 1038 MHz
Memory Speed 6008 MHz 4000 MHz
Power (Max TDP) 140 watts 100 watts
Bandwidth 144192 MB/sec 128000 MB/sec
Texel Rate 78400 Mtexels/sec 99648 Mtexels/sec
Pixel Rate 23520 Mpixels/sec 66432 Mpixels/sec
Unified Shaders 960 1536
Texture Mapping Units 80 96
Render Output Units 24 64
Bus Type GDDR5 GDDR5
Bus Width 192-bit 256-bit
Fab Process 28 nm 28 nm
Transistors 2540 million (Unknown) million
Bus PCIe 3.0 x16 PCIe 3.0 x16
DirectX Version DirectX 11.0 DirectX 12
OpenGL Version OpenGL 4.3 OpenGL 4.5

Memory Bandwidth: Bandwidth is the max amount of information (measured in megabytes per second) that can be transferred across the external memory interface in one second. The number is worked out by multiplying the card's bus width by its memory clock speed. If it uses DDR type RAM, the result should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be processed per second. This number is worked out by multiplying the total number of texture units by the core clock speed of the chip. The better the texel rate, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in one second.

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

Display Prices

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GeForce GTX 660

Amazon.com

Check prices at:

GeForce GTX 980M

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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