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GeForce GTX 750 vs Radeon R9 M390X

Intro

The GeForce GTX 750 has a GPU core speed of 1020 MHz, and the 1024 MB of GDDR5 RAM runs at 1250 MHz through a 128-bit bus. It also is made up of 512 Stream Processors, 32 TAUs, and 16 ROPs.

Compare those specs to the Radeon R9 M390X, which has clock speeds of 723 MHz on the GPU, and 1250 MHz on the 4096 MB of GDDR5 RAM. It features 2048 SPUs as well as 128 TAUs and 32 ROPs.

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

As far as performance goes, the Radeon R9 M390X should in theory be much better than the GeForce GTX 750 overall. (explain)

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

Texel Rate

The Radeon R9 M390X will be a lot (approximately 184%) more effective at AF 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 will be a lot (more or less 42%) faster with regards to FSAA than the GeForce GTX 750, and should 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

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.

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 MB per second) that can be transferred across the external memory interface within a second. It is worked out by multiplying the card's bus width by the speed of its memory. If it uses DDR memory, it should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be applied in one second. This figure is worked out by multiplying the total texture units of the card by the core speed of the chip. The better the texel rate, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in a second.

Pixel Rate: Pixel rate is the most pixels that the graphics chip can possibly record to its local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the number of Render Output Units by the the core speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate is also dependant on lots of other factors, especially the memory bandwidth - the lower the memory 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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