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GeForce GTX 660 Ti vs GeForce GTX 980M

Intro

The GeForce GTX 660 Ti features a GPU core speed of 915 MHz, and the 2048 MB of GDDR5 RAM is set to run at 1500 MHz through a 192-bit bus. It also is comprised of 1344 SPUs, 112 Texture Address Units, and 24 ROPs.

Compare those specifications to the GeForce GTX 980M, which has clock speeds of 1038 MHz on the GPU, and 1000 MHz on the 4096 MB of GDDR5 memory. It features 1536 SPUs as well as 96 Texture Address Units and 64 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
GeForce GTX 660 Ti 6013 points
Difference: 3463 (58%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 980M 100 Watts
GeForce GTX 660 Ti 150 Watts
Difference: 50 Watts (50%)

Memory Bandwidth

Theoretically speaking, the GeForce GTX 660 Ti should perform just a bit faster than the GeForce GTX 980M overall. (explain)

GeForce GTX 660 Ti 144000 MB/sec
GeForce GTX 980M 128000 MB/sec
Difference: 16000 (13%)

Texel Rate

The GeForce GTX 660 Ti should be a bit (approximately 3%) more effective at texture filtering than the GeForce GTX 980M. (explain)

GeForce GTX 660 Ti 102480 Mtexels/sec
GeForce GTX 980M 99648 Mtexels/sec
Difference: 2832 (3%)

Pixel Rate

If running with high levels of AA is important to you, then the GeForce GTX 980M is superior to the GeForce GTX 660 Ti, and very much so. (explain)

GeForce GTX 980M 66432 Mpixels/sec
GeForce GTX 660 Ti 21960 Mpixels/sec
Difference: 44472 (203%)

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 Ti

Amazon.com

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GeForce GTX 980M

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 660 Ti GeForce GTX 980M
Manufacturer nVidia nVidia
Year August 2012 October 7 2014
Code Name GK104 GM204
Memory 2048 MB 4096 MB
Core Speed 915 MHz 1038 MHz
Memory Speed 6000 MHz 4000 MHz
Power (Max TDP) 150 watts 100 watts
Bandwidth 144000 MB/sec 128000 MB/sec
Texel Rate 102480 Mtexels/sec 99648 Mtexels/sec
Pixel Rate 21960 Mpixels/sec 66432 Mpixels/sec
Unified Shaders 1344 1536
Texture Mapping Units 112 96
Render Output Units 24 64
Bus Type GDDR5 GDDR5
Bus Width 192-bit 256-bit
Fab Process 28 nm 28 nm
Transistors 3540 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 maximum amount of data (measured in megabytes per second) that can be moved past the external memory interface in one second. It is worked out by multiplying the interface width by the speed of its memory. If the card has DDR type RAM, it should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the 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 texture map elements (texels) that can be applied in one second. This number is calculated by multiplying the total texture units by the core clock speed of the chip. The higher the texel rate, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in one second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip can possibly write to its local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the number of ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate is also dependant on lots of other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the maximum fill rate.

Display Prices

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GeForce GTX 660 Ti

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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