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GeForce GTX 660 vs GeForce GTX 950M

Intro

The GeForce GTX 660 comes with a GPU core 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 made up of 960 Stream Processors, 80 TAUs, and 24 Raster Operation Units.

Compare all that to the GeForce GTX 950M, which features a GPU core clock speed of 914 MHz, and 2048 MB of DDR3 memory running at 1000 MHz through a 128-bit bus. It also is comprised of 640 SPUs, 40 TAUs, and 16 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 660 5063 points
GeForce GTX 950M 3330 points
Difference: 1733 (52%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 950M 55 Watts
GeForce GTX 660 140 Watts
Difference: 85 Watts (155%)

Memory Bandwidth

Theoretically speaking, the GeForce GTX 660 will be 351% quicker than the GeForce GTX 950M in general, because of its higher bandwidth. (explain)

GeForce GTX 660 144192 MB/sec
GeForce GTX 950M 32000 MB/sec
Difference: 112192 (351%)

Texel Rate

The GeForce GTX 660 is quite a bit (about 114%) faster with regards to anisotropic filtering than the GeForce GTX 950M. (explain)

GeForce GTX 660 78400 Mtexels/sec
GeForce GTX 950M 36560 Mtexels/sec
Difference: 41840 (114%)

Pixel Rate

The GeForce GTX 660 is much (approximately 61%) more effective at FSAA than the GeForce GTX 950M, and should be capable of handling higher screen resolutions without slowing down too much. (explain)

GeForce GTX 660 23520 Mpixels/sec
GeForce GTX 950M 14624 Mpixels/sec
Difference: 8896 (61%)

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

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GeForce GTX 950M

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 GeForce GTX 950M
Manufacturer nVidia nVidia
Year September 2012 March 12 2015
Code Name GK106 GM107
Memory 2048 MB 2048 MB
Core Speed 980 MHz 914 MHz
Memory Speed 6008 MHz 2000 MHz
Power (Max TDP) 140 watts 55 watts
Bandwidth 144192 MB/sec 32000 MB/sec
Texel Rate 78400 Mtexels/sec 36560 Mtexels/sec
Pixel Rate 23520 Mpixels/sec 14624 Mpixels/sec
Unified Shaders 960 640
Texture Mapping Units 80 40
Render Output Units 24 16
Bus Type GDDR5 DDR3
Bus Width 192-bit 128-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: Memory bandwidth is the max amount of information (measured in megabytes per second) that can be transferred over the external memory interface in a second. It's worked out by multiplying the card's bus width by the speed of its memory. If it uses DDR type RAM, it should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be processed per second. This figure is calculated by multiplying the total texture units of the card 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 applied in a second.

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

Display Prices

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GeForce GTX 660

Amazon.com

Check prices at:

GeForce GTX 950M

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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