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Radeon R9 M290X vs Radeon R9 M375X

Intro

The Radeon R9 M290X makes use of a 28 nm design. AMD has set the core speed at 850 MHz. The GDDR5 RAM works at a speed of 1200 MHz on this particular model. It features 1280 SPUs along with 80 TAUs and 32 Rasterization Operator Units.

Compare all that to the Radeon R9 M375X, which makes use of a 28 nm design. AMD has clocked the core speed at 1015 MHz. The GDDR5 RAM works at a speed of 1125 MHz on this specific card. It features 640 SPUs along with 40 Texture Address Units and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

The Radeon R9 M290X should in theory be a lot faster than the Radeon R9 M375X overall. (explain)

Radeon R9 M290X 153600 MB/sec
Radeon R9 M375X 72000 MB/sec
Difference: 81600 (113%)

Texel Rate

The Radeon R9 M290X will be much (approximately 67%) faster with regards to anisotropic filtering than the Radeon R9 M375X. (explain)

Radeon R9 M290X 68000 Mtexels/sec
Radeon R9 M375X 40600 Mtexels/sec
Difference: 27400 (67%)

Pixel Rate

If using lots of anti-aliasing is important to you, then the Radeon R9 M290X is superior to the Radeon R9 M375X, by a large margin. (explain)

Radeon R9 M290X 27200 Mpixels/sec
Radeon R9 M375X 16240 Mpixels/sec
Difference: 10960 (67%)

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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Radeon R9 M290X

Amazon.com

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Radeon R9 M375X

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 Radeon R9 M290X Radeon R9 M375X
Manufacturer AMD AMD
Year May 1 2014 2015
Code Name Neptune XT Cape Verde
Memory 4096 MB 4096 MB
Core Speed 850 MHz 1015 MHz
Memory Speed 4800 MHz 4500 MHz
Power (Max TDP) 100 watts (Unknown) watts
Bandwidth 153600 MB/sec 72000 MB/sec
Texel Rate 68000 Mtexels/sec 40600 Mtexels/sec
Pixel Rate 27200 Mpixels/sec 16240 Mpixels/sec
Unified Shaders 1280 640
Texture Mapping Units 80 40
Render Output Units 32 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 11.2 DirectX 12
OpenGL Version OpenGL 4.3 OpenGL 4.3

Memory Bandwidth: Bandwidth is the max amount of information (measured in MB per second) that can be moved across the external memory interface within a second. The number is calculated by multiplying the card's interface width by its memory speed. In the case of DDR type memory, the result should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are applied in one second. This is calculated by multiplying the total number of 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 one second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card could possibly record to its local memory in one second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of Raster Operations Pipelines by the the core clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to 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 potential to get to the maximum fill rate.

Display Prices

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Radeon R9 M290X

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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