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GeForce GTX 980M vs Radeon R9 M375X

Intro

The GeForce GTX 980M features a GPU clock speed of 1038 MHz, and the 4096 MB of GDDR5 memory runs at 1000 MHz through a 256-bit bus. It also is comprised of 1536 SPUs, 96 Texture Address Units, and 64 Raster Operation Units.

Compare all that to the Radeon R9 M375X, which comes with GPU clock speed of 1015 MHz, and 4096 MB of GDDR5 memory running at 1125 MHz through a 128-bit bus. It also features 640 Stream Processors, 40 TAUs, and 16 ROPs.

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

Theoretically, the GeForce GTX 980M should be a lot faster than the Radeon R9 M375X overall. (explain)

GeForce GTX 980M 128000 MB/sec
Radeon R9 M375X 72000 MB/sec
Difference: 56000 (78%)

Texel Rate

The GeForce GTX 980M is a lot (about 145%) better at anisotropic filtering than the Radeon R9 M375X. (explain)

GeForce GTX 980M 99648 Mtexels/sec
Radeon R9 M375X 40600 Mtexels/sec
Difference: 59048 (145%)

Pixel Rate

If running with lots of anti-aliasing is important to you, then the GeForce GTX 980M is a better choice, and very much so. (explain)

GeForce GTX 980M 66432 Mpixels/sec
Radeon R9 M375X 16240 Mpixels/sec
Difference: 50192 (309%)

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 980M

Amazon.com

Check prices at:

Radeon R9 M375X

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 980M Radeon R9 M375X
Manufacturer nVidia AMD
Year October 7 2014 2015
Code Name GM204 Cape Verde
Memory 4096 MB 4096 MB
Core Speed 1038 MHz 1015 MHz
Memory Speed 4000 MHz 4500 MHz
Power (Max TDP) 100 watts (Unknown) watts
Bandwidth 128000 MB/sec 72000 MB/sec
Texel Rate 99648 Mtexels/sec 40600 Mtexels/sec
Pixel Rate 66432 Mpixels/sec 16240 Mpixels/sec
Unified Shaders 1536 640
Texture Mapping Units 96 40
Render Output Units 64 16
Bus Type GDDR5 GDDR5
Bus Width 256-bit 128-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: Memory bandwidth is the maximum amount of information (in units of MB per second) that can be moved over the external memory interface within a second. The number is worked out by multiplying the bus width by its memory speed. If it uses DDR type RAM, it should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher the 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 texture map elements (texels) that are applied per second. This figure is worked out by multiplying the total texture units of the card by the core clock speed of the chip. The higher the texel rate, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip can possibly write to its local memory in a second - measured in millions of pixels per second. The figure is calculated by multiplying the number of Render Output Units by the the core 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 fill rate is also dependant on quite a few other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to reach the maximum fill rate.

Display Prices

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GeForce GTX 980M

Amazon.com

Check prices at:

Radeon R9 M375X

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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