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GeForce GT 450 (OEM) vs GeForce GTX 750

Intro

The GeForce GT 450 (OEM) uses a 40 nm design. nVidia has clocked the core speed at 790 MHz. The GDDR5 memory is set to run at a speed of 1000 MHz on this specific model. It features 144 SPUs along with 24 Texture Address Units and 24 Rasterization Operator Units.

Compare that to the GeForce GTX 750, which has a GPU core clock speed of 1020 MHz, and 1024 MB of GDDR5 memory running at 1250 MHz through a 128-bit bus. It also is made up of 512 SPUs, 32 Texture Address Units, and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 750 55 Watts
GeForce GT 450 (OEM) 106 Watts
Difference: 51 Watts (93%)

Memory Bandwidth

In theory, the GeForce GT 450 (OEM) will be 20% quicker than the GeForce GTX 750 in general, because of its greater data rate. (explain)

GeForce GT 450 (OEM) 96000 MB/sec
GeForce GTX 750 80000 MB/sec
Difference: 16000 (20%)

Texel Rate

The GeForce GTX 750 should be a lot (about 72%) faster with regards to anisotropic filtering than the GeForce GT 450 (OEM). (explain)

GeForce GTX 750 32640 Mtexels/sec
GeForce GT 450 (OEM) 18960 Mtexels/sec
Difference: 13680 (72%)

Pixel Rate

If running with high levels of AA is important to you, then the GeForce GT 450 (OEM) is superior to the GeForce GTX 750, but it probably won't make a huge difference. (explain)

GeForce GT 450 (OEM) 18960 Mpixels/sec
GeForce GTX 750 16320 Mpixels/sec
Difference: 2640 (16%)

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 GT 450 (OEM)

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.

Specifications

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Model GeForce GT 450 (OEM) GeForce GTX 750
Manufacturer nVidia nVidia
Year October 2010 February 2014
Code Name GF106 GM107
Memory 1536 MB 1024 MB
Core Speed 790 MHz 1020 MHz
Memory Speed 4000 MHz 5000 MHz
Power (Max TDP) 106 watts 55 watts
Bandwidth 96000 MB/sec 80000 MB/sec
Texel Rate 18960 Mtexels/sec 32640 Mtexels/sec
Pixel Rate 18960 Mpixels/sec 16320 Mpixels/sec
Unified Shaders 144 512
Texture Mapping Units 24 32
Render Output Units 24 16
Bus Type GDDR5 GDDR5
Bus Width 192-bit 128-bit
Fab Process 40 nm 28 nm
Transistors 1170 million 1870 million
Bus PCIe x16 PCIe 3.0 x16
DirectX Version DirectX 11 DirectX 11.0
OpenGL Version OpenGL 4.1 OpenGL 4.4

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

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are applied in one second. This is calculated by multiplying the total number of texture units of the card by the core clock 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 maximum amount of pixels the graphics card could possibly record to its local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of colour ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate is also dependant on lots of other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.

Display Prices

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GeForce GT 450 (OEM)

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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