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GeForce GTX 750 Ti vs Radeon HD 4790

Intro

The GeForce GTX 750 Ti has a clock frequency of 1020 MHz and a GDDR5 memory frequency of 1350 MHz. It also features a 128-bit memory bus, and makes use of a 28 nm design. It features 640 SPUs, 40 Texture Address Units, and 16 Raster Operation Units.

Compare all of that to the Radeon HD 4790, which features a core clock speed of 600 MHz and a GDDR5 memory frequency of 800 MHz. It also makes use of a 256-bit bus, and makes use of a 55 nm design. It features 640(128x5) SPUs, 32 TAUs, and 16 Raster Operation Units.

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

Performance-wise, the Radeon HD 4790 should theoretically be a little bit superior to the GeForce GTX 750 Ti in general. (explain)

Radeon HD 4790 102400 MB/sec
GeForce GTX 750 Ti 86400 MB/sec
Difference: 16000 (19%)

Texel Rate

The GeForce GTX 750 Ti will be a lot (about 113%) faster with regards to texture filtering than the Radeon HD 4790. (explain)

GeForce GTX 750 Ti 40800 Mtexels/sec
Radeon HD 4790 19200 Mtexels/sec
Difference: 21600 (113%)

Pixel Rate

If using lots of anti-aliasing is important to you, then the GeForce GTX 750 Ti is the winner, by far. (explain)

GeForce GTX 750 Ti 16320 Mpixels/sec
Radeon HD 4790 9600 Mpixels/sec
Difference: 6720 (70%)

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 750 Ti

Amazon.com

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Radeon HD 4790

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 750 Ti Radeon HD 4790
Manufacturer nVidia AMD
Year February 2014 2009
Code Name GM107 RV790
Memory 2048 MB 512 MB
Core Speed 1020 MHz 600 MHz
Memory Speed 5400 MHz 3200 MHz
Power (Max TDP) 60 watts (Unknown) watts
Bandwidth 86400 MB/sec 102400 MB/sec
Texel Rate 40800 Mtexels/sec 19200 Mtexels/sec
Pixel Rate 16320 Mpixels/sec 9600 Mpixels/sec
Unified Shaders 640 640(128x5)
Texture Mapping Units 40 32
Render Output Units 16 16
Bus Type GDDR5 GDDR5
Bus Width 128-bit 256-bit
Fab Process 28 nm 55 nm
Transistors 1870 million 959 million
Bus PCIe 3.0 x16 PCIe 2.0 x16
DirectX Version DirectX 11.0 DirectX 10.1
OpenGL Version OpenGL 4.4 OpenGL 3.0

Memory Bandwidth: Memory bandwidth is the max amount of information (measured in megabytes per second) that can be transferred over the external memory interface in one second. It is worked out by multiplying the card's bus width by its memory speed. If it uses DDR RAM, it 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, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are processed per second. This figure is worked out by multiplying the total number of texture units of the card by the core speed of the chip. The higher the texel rate, the better the graphics 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 maximum number of pixels that the graphics chip could possibly write to the local memory in one second - measured in millions of pixels per second. The figure is calculated by multiplying the number of Raster Operations Pipelines by the clock 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 also depends on lots of other factors, especially 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 750 Ti

Amazon.com

Check prices at:

Radeon HD 4790

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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