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Geforce GTX 670 vs Radeon R9 M390X

Intro

The Geforce GTX 670 comes with a GPU core speed of 915 MHz, and the 2048 MB of GDDR5 memory runs at 1500 MHz through a 256-bit bus. It also is made up of 1344 Stream Processors, 112 Texture Address Units, and 32 ROPs.

Compare that to the Radeon R9 M390X, which comes with core speeds of 723 MHz on the GPU, and 1250 MHz on the 4096 MB of GDDR5 RAM. It features 2048 SPUs along with 128 Texture Address Units and 32 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R9 M390X 125 Watts
Geforce GTX 670 170 Watts
Difference: 45 Watts (36%)

Memory Bandwidth

Performance-wise, the Geforce GTX 670 should theoretically be a small bit superior to the Radeon R9 M390X in general. (explain)

Geforce GTX 670 192000 MB/sec
Radeon R9 M390X 160000 MB/sec
Difference: 32000 (20%)

Texel Rate

The Geforce GTX 670 should be a little bit (more or less 11%) better at anisotropic filtering than the Radeon R9 M390X. (explain)

Geforce GTX 670 102480 Mtexels/sec
Radeon R9 M390X 92544 Mtexels/sec
Difference: 9936 (11%)

Pixel Rate

If running with lots of anti-aliasing is important to you, then the Geforce GTX 670 is a better choice, by far. (explain)

Geforce GTX 670 29280 Mpixels/sec
Radeon R9 M390X 23136 Mpixels/sec
Difference: 6144 (27%)

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 670

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 670 Radeon R9 M390X
Manufacturer nVidia AMD
Year May 2012 2015
Code Name GK104 Tonga
Memory 2048 MB 4096 MB
Core Speed 915 MHz 723 MHz
Memory Speed 6000 MHz 5000 MHz
Power (Max TDP) 170 watts 125 watts
Bandwidth 192000 MB/sec 160000 MB/sec
Texel Rate 102480 Mtexels/sec 92544 Mtexels/sec
Pixel Rate 29280 Mpixels/sec 23136 Mpixels/sec
Unified Shaders 1344 2048
Texture Mapping Units 112 128
Render Output Units 32 32
Bus Type GDDR5 GDDR5
Bus Width 256-bit 256-bit
Fab Process 28 nm 28 nm
Transistors 3540 million (Unknown) million
Bus PCIe 3.0 x16 PCIe 3.0 x16
DirectX Version DirectX 11.0 DirectX 12
OpenGL Version OpenGL 4.2 OpenGL 4.3

Memory Bandwidth: Memory bandwidth is the max amount of information (in units of MB per second) that can be transferred past the external memory interface in a second. It is worked out by multiplying the bus width by its memory speed. In the case of DDR type RAM, it should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the faster 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 is worked out 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 texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in one second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card could possibly record to its local memory in a 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 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 memory bandwidth is, the lower the ability to reach the max fill rate.

Display Prices

Hide Prices

Geforce GTX 670

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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