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GeForce 930M vs Radeon R9 M390X

Intro

The GeForce 930M features a core clock speed of 928 MHz and a DDR3 memory frequency of 900 MHz. It also makes use of a 64-bit bus, and uses a 28 nm design. It is comprised of 384 SPUs, 24 Texture Address Units, and 8 ROPs.

Compare all that to the Radeon R9 M390X, which has GPU core speed of 723 MHz, and 4096 MB of GDDR5 RAM running at 1250 MHz through a 256-bit bus. It also is comprised of 2048 SPUs, 128 Texture Address Units, and 32 ROPs.

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

The Radeon R9 M390X, in theory, should perform quite a bit faster than the GeForce 930M in general. (explain)

Radeon R9 M390X 160000 MB/sec
GeForce 930M 14400 MB/sec
Difference: 145600 (1011%)

Texel Rate

The Radeon R9 M390X should be quite a bit (more or less 316%) more effective at anisotropic filtering than the GeForce 930M. (explain)

Radeon R9 M390X 92544 Mtexels/sec
GeForce 930M 22272 Mtexels/sec
Difference: 70272 (316%)

Pixel Rate

The Radeon R9 M390X is quite a bit (about 212%) more effective at AA than the GeForce 930M, and also will be able to handle higher screen resolutions more effectively. (explain)

Radeon R9 M390X 23136 Mpixels/sec
GeForce 930M 7424 Mpixels/sec
Difference: 15712 (212%)

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 930M

Amazon.com

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Radeon R9 M390X

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 930M Radeon R9 M390X
Manufacturer nVidia AMD
Year March 12 2015 2015
Code Name GM108 Tonga
Memory 2048 MB 4096 MB
Core Speed 928 MHz 723 MHz
Memory Speed 1800 MHz 5000 MHz
Power (Max TDP) (Unknown) watts 125 watts
Bandwidth 14400 MB/sec 160000 MB/sec
Texel Rate 22272 Mtexels/sec 92544 Mtexels/sec
Pixel Rate 7424 Mpixels/sec 23136 Mpixels/sec
Unified Shaders 384 2048
Texture Mapping Units 24 128
Render Output Units 8 32
Bus Type DDR3 GDDR5
Bus Width 64-bit 256-bit
Fab Process 28 nm 28 nm
Transistors (Unknown) million (Unknown) million
Bus PCIe 3.0 x16 PCIe 3.0 x16
DirectX Version DirectX 12 DirectX 12
OpenGL Version OpenGL 4.5 OpenGL 4.3

Memory Bandwidth: Bandwidth is the max amount of information (measured in MB per second) that can be moved past the external memory interface in one second. It is worked out by multiplying the card's bus width by the speed of its memory. If it uses DDR type RAM, it must be multiplied by 2 once again. If 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 high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are applied per second. This is worked out by multiplying the total texture units of the card by the core speed of the chip. The higher this number, the better the graphics 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 write to the local memory in a second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of Raster Operations Pipelines by the the card's clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate also depends on quite a few other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.

Display Prices

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GeForce 930M

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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