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Radeon R9 380X vs Radeon R9 M290X

Intro

The Radeon R9 380X has core clock speeds of 970 MHz on the GPU, and 1425 MHz on the 4096 MB of GDDR5 memory. It features 2048 SPUs along with 128 TAUs and 32 Rasterization Operator Units.

Compare those specifications to the Radeon R9 M290X, which features core clock speeds of 850 MHz on the GPU, and 1200 MHz on the 4096 MB of GDDR5 RAM. It features 1280 SPUs along with 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 380X 190 Watts
Difference: 90 Watts (90%)

Memory Bandwidth

As far as performance goes, the Radeon R9 380X should in theory be a small bit better than the Radeon R9 M290X overall. (explain)

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

Texel Rate

The Radeon R9 380X should be quite a bit (approximately 83%) better at AF than the Radeon R9 M290X. (explain)

Radeon R9 380X 124160 Mtexels/sec
Radeon R9 M290X 68000 Mtexels/sec
Difference: 56160 (83%)

Pixel Rate

If using a high screen resolution is important to you, then the Radeon R9 380X is superior to the Radeon R9 M290X, though not by far. (explain)

Radeon R9 380X 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 380X

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 380X Radeon R9 M290X
Manufacturer AMD AMD
Year November 2015 May 1 2014
Code Name Tonga XT 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 124160 Mtexels/sec 68000 Mtexels/sec
Pixel Rate 31040 Mpixels/sec 27200 Mpixels/sec
Unified Shaders 2048 1280
Texture Mapping Units 128 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 x16 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 maximum amount of data (measured in MB per second) that can be transferred past the external memory interface within a second. It is calculated by multiplying the card's interface width by the speed of its memory. If the card has DDR memory, the result should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the bandwidth is, the faster the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are applied 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 video 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 number of pixels the graphics card could possibly record to the local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of Render Output Units by the the core 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 rate also depends on many other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.

Display Prices

Hide Prices

Radeon R9 380X

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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