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GeForce GTX 660 vs GeForce GTX 750

Intro

The GeForce GTX 660 features a clock frequency of 980 MHz and a GDDR5 memory frequency of 1502 MHz. It also makes use of a 192-bit bus, and makes use of a 28 nm design. It is comprised of 960 SPUs, 80 Texture Address Units, and 24 ROPs.

Compare all that to the GeForce GTX 750, which has core clock speeds of 1020 MHz on the GPU, and 1250 MHz on the 1024 MB of GDDR5 memory. It features 512 SPUs as well as 32 TAUs and 16 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 660 5063 points
GeForce GTX 750 3958 points
Difference: 1105 (28%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 750 55 Watts
GeForce GTX 660 140 Watts
Difference: 85 Watts (155%)

Memory Bandwidth

Theoretically, the GeForce GTX 660 should be a lot faster than the GeForce GTX 750 in general. (explain)

GeForce GTX 660 144192 MB/sec
GeForce GTX 750 80000 MB/sec
Difference: 64192 (80%)

Texel Rate

The GeForce GTX 660 should be a lot (about 140%) faster with regards to texture filtering than the GeForce GTX 750. (explain)

GeForce GTX 660 78400 Mtexels/sec
GeForce GTX 750 32640 Mtexels/sec
Difference: 45760 (140%)

Pixel Rate

If using a high screen resolution is important to you, then the GeForce GTX 660 is superior to the GeForce GTX 750, and very much so. (explain)

GeForce GTX 660 23520 Mpixels/sec
GeForce GTX 750 16320 Mpixels/sec
Difference: 7200 (44%)

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 750

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 750
Manufacturer nVidia nVidia
Year September 2012 February 2014
Code Name GK106 GM107
Memory 2048 MB 1024 MB
Core Speed 980 MHz 1020 MHz
Memory Speed 6008 MHz 5000 MHz
Power (Max TDP) 140 watts 55 watts
Bandwidth 144192 MB/sec 80000 MB/sec
Texel Rate 78400 Mtexels/sec 32640 Mtexels/sec
Pixel Rate 23520 Mpixels/sec 16320 Mpixels/sec
Unified Shaders 960 512
Texture Mapping Units 80 32
Render Output Units 24 16
Bus Type GDDR5 GDDR5
Bus Width 192-bit 128-bit
Fab Process 28 nm 28 nm
Transistors 2540 million 1870 million
Bus PCIe 3.0 x16 PCIe 3.0 x16
DirectX Version DirectX 11.0 DirectX 11.0
OpenGL Version OpenGL 4.3 OpenGL 4.4

Memory Bandwidth: Memory bandwidth is the largest amount of data (in units of megabytes per second) that can be transported across the external memory interface in a second. It's calculated by multiplying the bus width by its memory clock speed. If it uses DDR type memory, it should be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip can possibly write to its local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the number of colour ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). 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 get to the maximum fill rate.

Display Prices

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GeForce GTX 660

Amazon.com

Check prices at:

GeForce GTX 750

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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