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GeForce GTX 750 vs Radeon R9 M390X

Intro

The GeForce GTX 750 has a clock speed of 1020 MHz and a GDDR5 memory speed of 1250 MHz. It also makes use of a 128-bit bus, and makes use of a 28 nm design. It features 512 SPUs, 32 TAUs, and 16 Raster Operation Units.

Compare those specs to the Radeon R9 M390X, which uses a 28 nm design. AMD has set the core speed at 723 MHz. The GDDR5 memory runs at a speed of 1250 MHz on this model. It features 2048 SPUs as well as 128 Texture Address Units and 32 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 750 55 Watts
Radeon R9 M390X 125 Watts
Difference: 70 Watts (127%)

Memory Bandwidth

In theory, the Radeon R9 M390X is 100% faster than the GeForce GTX 750 overall, because of its greater data rate. (explain)

Radeon R9 M390X 160000 MB/sec
GeForce GTX 750 80000 MB/sec
Difference: 80000 (100%)

Texel Rate

The Radeon R9 M390X is quite a bit (more or less 184%) faster with regards to anisotropic filtering than the GeForce GTX 750. (explain)

Radeon R9 M390X 92544 Mtexels/sec
GeForce GTX 750 32640 Mtexels/sec
Difference: 59904 (184%)

Pixel Rate

The Radeon R9 M390X should be quite a bit (more or less 42%) faster with regards to anti-aliasing than the GeForce GTX 750, and will be able to handle higher screen resolutions more effectively. (explain)

Radeon R9 M390X 23136 Mpixels/sec
GeForce GTX 750 16320 Mpixels/sec
Difference: 6816 (42%)

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

Amazon.com

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Radeon R9 M390X

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 GTX 750 Radeon R9 M390X
Manufacturer nVidia AMD
Year February 2014 2015
Code Name GM107 Tonga
Memory 1024 MB 4096 MB
Core Speed 1020 MHz 723 MHz
Memory Speed 5000 MHz 5000 MHz
Power (Max TDP) 55 watts 125 watts
Bandwidth 80000 MB/sec 160000 MB/sec
Texel Rate 32640 Mtexels/sec 92544 Mtexels/sec
Pixel Rate 16320 Mpixels/sec 23136 Mpixels/sec
Unified Shaders 512 2048
Texture Mapping Units 32 128
Render Output Units 16 32
Bus Type GDDR5 GDDR5
Bus Width 128-bit 256-bit
Fab Process 28 nm 28 nm
Transistors 1870 million (Unknown) million
Bus PCIe 3.0 x16 PCIe 3.0 x16
DirectX Version DirectX 11.0 DirectX 12
OpenGL Version OpenGL 4.4 OpenGL 4.3

Memory Bandwidth: Bandwidth is the max amount of data (in units of megabytes per second) that can be transferred past the external memory interface within a second. It is worked out by multiplying the interface width by the speed of its memory. If it uses DDR RAM, the result should be multiplied by 2 again. If DDR5, multiply by 4 instead. The better the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be processed per second. This figure is worked out by multiplying the total amount of texture units by the core clock 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 per second.

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card could possibly record to the local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the number of colour ROPs 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 output rate is also dependant on many other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the max fill rate.

Display Prices

Hide Prices

GeForce GTX 750

Amazon.com

Check prices at:

Radeon R9 M390X

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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