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GeForce GTX 650 vs GeForce GTX 750 Ti

Intro

The GeForce GTX 650 has clock speeds of 1058 MHz on the GPU, and 1250 MHz on the 1024 MB of GDDR5 RAM. It features 384 SPUs as well as 32 TAUs and 16 Rasterization Operator Units.

Compare all of that to the GeForce GTX 750 Ti, which features a core clock frequency of 1020 MHz and a GDDR5 memory speed of 1350 MHz. It also features a 128-bit memory bus, and uses a 28 nm design. It features 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 750 Ti 4562 points
GeForce GTX 650 2263 points
Difference: 2299 (102%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 750 Ti 60 Watts
GeForce GTX 650 64 Watts
Difference: 4 Watts (7%)

Memory Bandwidth

Theoretically speaking, the GeForce GTX 750 Ti should be 8% faster than the GeForce GTX 650 overall, because of its higher data rate. (explain)

GeForce GTX 750 Ti 86400 MB/sec
GeForce GTX 650 80000 MB/sec
Difference: 6400 (8%)

Texel Rate

The GeForce GTX 750 Ti is quite a bit (more or less 21%) better at texture filtering than the GeForce GTX 650. (explain)

GeForce GTX 750 Ti 40800 Mtexels/sec
GeForce GTX 650 33856 Mtexels/sec
Difference: 6944 (21%)

Pixel Rate

If using a high resolution is important to you, then the GeForce GTX 650 is the winner, not by a very large margin though. (explain)

GeForce GTX 650 16928 Mpixels/sec
GeForce GTX 750 Ti 16320 Mpixels/sec
Difference: 608 (4%)

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 650

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 650 GeForce GTX 750 Ti
Manufacturer nVidia nVidia
Year September 2012 February 2014
Code Name GK107 GM107
Memory 1024 MB 2048 MB
Core Speed 1058 MHz 1020 MHz
Memory Speed 5000 MHz 5400 MHz
Power (Max TDP) 64 watts 60 watts
Bandwidth 80000 MB/sec 86400 MB/sec
Texel Rate 33856 Mtexels/sec 40800 Mtexels/sec
Pixel Rate 16928 Mpixels/sec 16320 Mpixels/sec
Unified Shaders 384 640
Texture Mapping Units 32 40
Render Output Units 16 16
Bus Type GDDR5 GDDR5
Bus Width 128-bit 128-bit
Fab Process 28 nm 28 nm
Transistors 1300 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 data (in units of megabytes per second) that can be transported over the external memory interface in one second. It's calculated by multiplying the card's bus width by its memory clock speed. In the case of DDR memory, the result should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the bandwidth is, the better the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be applied in one second. This 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 card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in one second.

Pixel Rate: Pixel rate is the most pixels that the graphics card can possibly write to the local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate is also dependant on quite a few other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the max fill rate.

Display Prices

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GeForce GTX 650

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.

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