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Radeon R9 380 4G vs Radeon R9 M290X

Intro

The Radeon R9 380 4G features a core clock speed of 970 MHz and a GDDR5 memory speed of 1425 MHz. It also uses a 256-bit bus, and makes use of a 28 nm design. It features 1792 SPUs, 112 Texture Address Units, and 32 Raster Operation Units.

Compare all of that to the Radeon R9 M290X, which features GPU clock speed of 850 MHz, and 4096 MB of GDDR5 RAM running at 1200 MHz through a 256-bit bus. It also is made up of 1280 SPUs, 80 TAUs, and 32 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R9 M290X 100 Watts
Radeon R9 380 4G 190 Watts
Difference: 90 Watts (90%)

Memory Bandwidth

In theory, the Radeon R9 380 4G should perform a small bit faster than the Radeon R9 M290X overall. (explain)

Radeon R9 380 4G 182400 MB/sec
Radeon R9 M290X 153600 MB/sec
Difference: 28800 (19%)

Texel Rate

The Radeon R9 380 4G should be a lot (more or less 60%) faster with regards to texture filtering than the Radeon R9 M290X. (explain)

Radeon R9 380 4G 108640 Mtexels/sec
Radeon R9 M290X 68000 Mtexels/sec
Difference: 40640 (60%)

Pixel Rate

If running with lots of anti-aliasing is important to you, then the Radeon R9 380 4G is a better choice, but not by far. (explain)

Radeon R9 380 4G 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 4G

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 4G Radeon R9 M290X
Manufacturer AMD AMD
Year June 2015 May 1 2014
Code Name Antigua PRO Neptune XT
Memory 4096 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: Bandwidth is the max amount of information (measured in megabytes per second) that can be transported across the external memory interface within a second. It's calculated by multiplying the interface width by its memory speed. In the case of DDR memory, it must be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the card's memory bandwidth, the better 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 are processed per second. This number is calculated by multiplying the total amount of texture units 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 in a second.

Pixel Rate: Pixel rate is the most pixels that the graphics chip could possibly record to its local memory per second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of Raster Operations Pipelines by the the card's clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate also depends 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 max fill rate.

Display Prices

Hide Prices

Radeon R9 380 4G

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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