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GeForce GTX 660 vs GeForce GTX 750 Ti

Intro

The GeForce GTX 660 makes use of a 28 nm design. nVidia has clocked the core frequency at 980 MHz. The GDDR5 RAM works at a speed of 1502 MHz on this particular card. It features 960 SPUs along with 80 TAUs and 24 ROPs.

Compare those specs to the GeForce GTX 750 Ti, which makes use of a 28 nm design. nVidia has set the core speed at 1020 MHz. The GDDR5 RAM is set to run at a speed of 1350 MHz on this particular card. It features 640 SPUs along with 40 Texture Address Units 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 Ti 4562 points
Difference: 501 (11%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 750 Ti 60 Watts
GeForce GTX 660 140 Watts
Difference: 80 Watts (133%)

Memory Bandwidth

As far as performance goes, the GeForce GTX 660 should in theory be a lot better than the GeForce GTX 750 Ti in general. (explain)

GeForce GTX 660 144192 MB/sec
GeForce GTX 750 Ti 86400 MB/sec
Difference: 57792 (67%)

Texel Rate

The GeForce GTX 660 will be quite a bit (approximately 92%) more effective at AF than the GeForce GTX 750 Ti. (explain)

GeForce GTX 660 78400 Mtexels/sec
GeForce GTX 750 Ti 40800 Mtexels/sec
Difference: 37600 (92%)

Pixel Rate

If using high levels of AA is important to you, then the GeForce GTX 660 is the winner, and very much so. (explain)

GeForce GTX 660 23520 Mpixels/sec
GeForce GTX 750 Ti 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 Ti

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 Ti
Manufacturer nVidia nVidia
Year September 2012 February 2014
Code Name GK106 GM107
Memory 2048 MB 2048 MB
Core Speed 980 MHz 1020 MHz
Memory Speed 6008 MHz 5400 MHz
Power (Max TDP) 140 watts 60 watts
Bandwidth 144192 MB/sec 86400 MB/sec
Texel Rate 78400 Mtexels/sec 40800 Mtexels/sec
Pixel Rate 23520 Mpixels/sec 16320 Mpixels/sec
Unified Shaders 960 640
Texture Mapping Units 80 40
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 (counted in MB per second) that can be moved over 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 memory, it should be multiplied by 2 again. If DDR5, multiply by 4 instead. The better the memory bandwidth, 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 amount of texture map elements (texels) that are applied in one second. This number is worked out by multiplying the total texture units of the card by the core clock speed of the chip. The better this number, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in a second.

Pixel Rate: Pixel rate is the most pixels that the graphics chip can possibly record to the local memory in a second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of Render Output Units 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 many other factors, especially the memory bandwidth of the card - 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

Amazon.com

Check prices at:

GeForce GTX 750 Ti

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.

Comments

One Response to “GeForce GTX 660 vs GeForce GTX 750 Ti”
Sardaar Ali says:

I want to know which one is better and why 🙂

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