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GeForce GTX 660 Ti vs GeForce GTX 980

Intro

The GeForce GTX 660 Ti has core speeds of 915 MHz on the GPU, and 1500 MHz on the 2048 MB of GDDR5 RAM. It features 1344 SPUs as well as 112 TAUs and 24 Rasterization Operator Units.

Compare all that to the GeForce GTX 980, which makes use of a 28 nm design. nVidia has set the core speed at 1126 MHz. The GDDR5 RAM is set to run at a frequency of 1750 MHz on this particular card. It features 2048 SPUs as well as 128 TAUs 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 980 13552 points
GeForce GTX 660 Ti 6013 points
Difference: 7539 (125%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 660 Ti 150 Watts
GeForce GTX 980 165 Watts
Difference: 15 Watts (10%)

Memory Bandwidth

The GeForce GTX 980 should in theory perform much faster than the GeForce GTX 660 Ti overall. (explain)

GeForce GTX 980 224000 MB/sec
GeForce GTX 660 Ti 144000 MB/sec
Difference: 80000 (56%)

Texel Rate

The GeForce GTX 980 is a lot (more or less 41%) faster with regards to AF than the GeForce GTX 660 Ti. (explain)

GeForce GTX 980 144128 Mtexels/sec
GeForce GTX 660 Ti 102480 Mtexels/sec
Difference: 41648 (41%)

Pixel Rate

If using lots of anti-aliasing is important to you, then the GeForce GTX 980 is superior to the GeForce GTX 660 Ti, and very much so. (explain)

GeForce GTX 980 72064 Mpixels/sec
GeForce GTX 660 Ti 21960 Mpixels/sec
Difference: 50104 (228%)

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 980

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 980
Manufacturer nVidia nVidia
Year August 2012 September 2014
Code Name GK104 GM204-400
Memory 2048 MB 4096 MB
Core Speed 915 MHz 1126 MHz
Memory Speed 6000 MHz 7000 MHz
Power (Max TDP) 150 watts 165 watts
Bandwidth 144000 MB/sec 224000 MB/sec
Texel Rate 102480 Mtexels/sec 144128 Mtexels/sec
Pixel Rate 21960 Mpixels/sec 72064 Mpixels/sec
Unified Shaders 1344 2048
Texture Mapping Units 112 128
Render Output Units 24 64
Bus Type GDDR5 GDDR5
Bus Width 192-bit 256-bit
Fab Process 28 nm 28 nm
Transistors 3540 million 5200 million
Bus PCIe 3.0 x16 PCIe 3.0 x16
DirectX Version DirectX 11.0 DirectX 11.2
OpenGL Version OpenGL 4.3 OpenGL 4.5

Memory Bandwidth: Bandwidth is the largest amount of information (in units of megabytes per second) that can be transported over the external memory interface in a second. The number is calculated by multiplying the bus width by its memory speed. If the card has DDR type RAM, it must be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher 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 are applied in one second. This number is calculated by multiplying the total amount of texture units of the card by the core clock speed of the chip. The higher this number, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in a second.

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

Display Prices

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GeForce GTX 660 Ti

Amazon.com

Check prices at:

GeForce GTX 980

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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