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Radeon R9 380X vs Radeon R9 M290X

Intro

The Radeon R9 380X makes use of a 28 nm design. AMD has set the core frequency at 970 MHz. The GDDR5 RAM is set to run at a frequency of 1425 MHz on this model. It features 2048 SPUs as well as 128 Texture Address Units and 32 ROPs.

Compare those specs to the Radeon R9 M290X, which uses a 28 nm design. AMD has clocked the core speed at 850 MHz. The GDDR5 memory is set to run at a speed of 1200 MHz on this specific card. It features 1280 SPUs along with 80 Texture Address Units 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 theoretically be a little bit superior to 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 will be a lot (approximately 83%) more effective at anisotropic filtering than the Radeon R9 M290X. (explain)

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

Pixel Rate

The Radeon R9 380X is a small bit (about 14%) faster with regards to AA than the Radeon R9 M290X, and also will be capable of handling higher resolutions without losing too much performance. (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 max amount of information (measured in MB per second) that can be moved past the external memory interface in one second. The number is worked out by multiplying the bus width by its memory clock speed. If the card has DDR type memory, the result should be multiplied by 2 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, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be applied in one second. This number is worked out by multiplying the total texture units by the core speed of the chip. The better this number, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in one second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card could possibly record to the local memory in one second - measured in millions of pixels per second. The number is worked out by multiplying the number of Render Output Units by the the core clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate also depends on quite a few other factors, most notably 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 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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