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GeForce GTX 660 Ti vs GeForce GTX 750 Ti

Intro

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

Compare all that to the GeForce GTX 750 Ti, which makes use of a 28 nm design. nVidia has clocked the core frequency at 1020 MHz. The GDDR5 RAM works at a frequency of 1350 MHz on this particular model. It features 640 SPUs as well as 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 Ti 6013 points
GeForce GTX 750 Ti 4562 points
Difference: 1451 (32%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 750 Ti 60 Watts
GeForce GTX 660 Ti 150 Watts
Difference: 90 Watts (150%)

Memory Bandwidth

Theoretically speaking, the GeForce GTX 660 Ti should be much faster than the GeForce GTX 750 Ti overall. (explain)

GeForce GTX 660 Ti 144000 MB/sec
GeForce GTX 750 Ti 86400 MB/sec
Difference: 57600 (67%)

Texel Rate

The GeForce GTX 660 Ti will be a lot (more or less 151%) faster with regards to AF than the GeForce GTX 750 Ti. (explain)

GeForce GTX 660 Ti 102480 Mtexels/sec
GeForce GTX 750 Ti 40800 Mtexels/sec
Difference: 61680 (151%)

Pixel Rate

The GeForce GTX 660 Ti is quite a bit (about 35%) more effective at AA than the GeForce GTX 750 Ti, and will be capable of handling higher resolutions without losing too much performance. (explain)

GeForce GTX 660 Ti 21960 Mpixels/sec
GeForce GTX 750 Ti 16320 Mpixels/sec
Difference: 5640 (35%)

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 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 Ti GeForce GTX 750 Ti
Manufacturer nVidia nVidia
Year August 2012 February 2014
Code Name GK104 GM107
Memory 2048 MB 2048 MB
Core Speed 915 MHz 1020 MHz
Memory Speed 6000 MHz 5400 MHz
Power (Max TDP) 150 watts 60 watts
Bandwidth 144000 MB/sec 86400 MB/sec
Texel Rate 102480 Mtexels/sec 40800 Mtexels/sec
Pixel Rate 21960 Mpixels/sec 16320 Mpixels/sec
Unified Shaders 1344 640
Texture Mapping Units 112 40
Render Output Units 24 16
Bus Type GDDR5 GDDR5
Bus Width 192-bit 128-bit
Fab Process 28 nm 28 nm
Transistors 3540 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: Bandwidth is the max amount of information (in units of MB per second) that can be transferred past the external memory interface in a second. It's calculated by multiplying the bus width by its memory speed. If the card has DDR RAM, the result should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the faster the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are applied in one second. This is worked out by multiplying the total amount of texture units of the card 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 most pixels that the graphics chip can possibly write to the local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate also depends on quite a few other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.

Display Prices

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GeForce GTX 660 Ti

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

2 Responses to “GeForce GTX 660 Ti vs GeForce GTX 750 Ti”
Anonymous says:

Yet I keep reading people praising the 750ti. Such a sad little card compared to the 660ti.

Yep says:

They think that a higher number equals a superior card.

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