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GeForce GTX 660 Ti vs GeForce GTX 880M

Intro

The GeForce GTX 660 Ti features clock speeds of 915 MHz on the GPU, and 1500 MHz on the 2048 MB of GDDR5 memory. It features 1344 SPUs along with 112 Texture Address Units and 24 Rasterization Operator Units.

Compare all of that to the GeForce GTX 880M, which features a GPU core clock speed of 954 MHz, and 4096 MB of GDDR5 memory running at 1000 MHz through a 256-bit bus. It also features 1536 Stream Processors, 128 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
GeForce GTX 660 Ti 6013 points
Difference: 347 (6%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 880M 130 Watts
GeForce GTX 660 Ti 150 Watts
Difference: 20 Watts (15%)

Memory Bandwidth

As far as performance goes, the GeForce GTX 660 Ti should theoretically be just a bit superior to the GeForce GTX 880M overall. (explain)

GeForce GTX 660 Ti 144000 MB/sec
GeForce GTX 880M 128000 MB/sec
Difference: 16000 (13%)

Texel Rate

The GeForce GTX 880M should be just a bit (approximately 19%) better at texture filtering than the GeForce GTX 660 Ti. (explain)

GeForce GTX 880M 122112 Mtexels/sec
GeForce GTX 660 Ti 102480 Mtexels/sec
Difference: 19632 (19%)

Pixel Rate

The GeForce GTX 880M is quite a bit (approximately 39%) better at full screen anti-aliasing than the GeForce GTX 660 Ti, and also able to handle higher resolutions while still performing well. (explain)

GeForce GTX 880M 30528 Mpixels/sec
GeForce GTX 660 Ti 21960 Mpixels/sec
Difference: 8568 (39%)

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

Check prices at:

GeForce GTX 880M

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 Ti GeForce GTX 880M
Manufacturer nVidia nVidia
Year August 2012 March 12 2014
Code Name GK104 GK104
Memory 2048 MB 4096 MB
Core Speed 915 MHz 954 MHz
Memory Speed 6000 MHz 4000 MHz
Power (Max TDP) 150 watts 130 watts
Bandwidth 144000 MB/sec 128000 MB/sec
Texel Rate 102480 Mtexels/sec 122112 Mtexels/sec
Pixel Rate 21960 Mpixels/sec 30528 Mpixels/sec
Unified Shaders 1344 1536
Texture Mapping Units 112 128
Render Output Units 24 32
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: Memory bandwidth is the maximum amount of information (measured in MB per second) that can be moved past the external memory interface within a second. It's worked out by multiplying the card's interface width by the speed of its memory. In the case of DDR RAM, the result should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the bandwidth is, 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 number of texture map elements (texels) that can be applied in one second. This number is worked out by multiplying the total amount of texture units by the core speed of the chip. The better the texel rate, the better the video 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 maximum number of pixels the video card could possibly write to the local memory per second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of Raster Operations Pipelines by the clock speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate also depends on many other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.

Display Prices

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GeForce GTX 660 Ti

Amazon.com

Check prices at:

GeForce GTX 880M

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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