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Radeon R9 380 2G vs Radeon R9 M290X

Intro

The Radeon R9 380 2G comes with a core clock speed of 970 MHz and a GDDR5 memory speed of 1425 MHz. It also features a 256-bit bus, and makes use of a 28 nm design. It is comprised of 1792 SPUs, 112 TAUs, and 32 ROPs.

Compare that to the Radeon R9 M290X, which comes with core clock speeds of 850 MHz on the GPU, and 1200 MHz on the 4096 MB of GDDR5 memory. It features 1280 SPUs as well as 80 Texture Address Units and 32 Rasterization Operator Units.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R9 M290X 100 Watts
Radeon R9 380 2G 190 Watts
Difference: 90 Watts (90%)

Memory Bandwidth

Performance-wise, the Radeon R9 380 2G should in theory be a small bit superior to the Radeon R9 M290X in general. (explain)

Radeon R9 380 2G 182400 MB/sec
Radeon R9 M290X 153600 MB/sec
Difference: 28800 (19%)

Texel Rate

The Radeon R9 380 2G is much (about 60%) faster with regards to AF than the Radeon R9 M290X. (explain)

Radeon R9 380 2G 108640 Mtexels/sec
Radeon R9 M290X 68000 Mtexels/sec
Difference: 40640 (60%)

Pixel Rate

The Radeon R9 380 2G will be just a bit (approximately 14%) better at AA than the Radeon R9 M290X, and also able to handle higher screen resolutions without losing too much performance. (explain)

Radeon R9 380 2G 31040 Mpixels/sec
Radeon R9 M290X 27200 Mpixels/sec
Difference: 3840 (14%)

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 380 2G

Amazon.com

Check prices at:

Radeon R9 M290X

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 Radeon R9 380 2G Radeon R9 M290X
Manufacturer AMD AMD
Year June 2015 May 1 2014
Code Name Antigua PRO Neptune XT
Memory 2048 MB 4096 MB
Core Speed 970 MHz 850 MHz
Memory Speed 5700 MHz 4800 MHz
Power (Max TDP) 190 watts 100 watts
Bandwidth 182400 MB/sec 153600 MB/sec
Texel Rate 108640 Mtexels/sec 68000 Mtexels/sec
Pixel Rate 31040 Mpixels/sec 27200 Mpixels/sec
Unified Shaders 1792 1280
Texture Mapping Units 112 80
Render Output Units 32 32
Bus Type GDDR5 GDDR5
Bus Width 256-bit 256-bit
Fab Process 28 nm 28 nm
Transistors 5000 million (Unknown) million
Bus PCIe 3.0 ×16 PCIe 3.0 x16
DirectX Version DirectX 12.0 DirectX 11.2
OpenGL Version OpenGL 4.5 OpenGL 4.3

Memory Bandwidth: Memory bandwidth is the max amount of data (measured in megabytes per second) that can be moved over the external memory interface in a second. The number is worked out by multiplying the interface width by its memory clock speed. If it uses DDR memory, it must be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the bandwidth is, 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 processed in one second. This figure is calculated by multiplying the total amount of texture units by the core clock speed of the chip. The better the texel rate, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed per second.

Pixel Rate: Pixel rate is the most pixels that the graphics chip could possibly write 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 clock speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate also depends on quite a few other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.

Display Prices

Hide Prices

Radeon R9 380 2G

Amazon.com

Check prices at:

Radeon R9 M290X

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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