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Radeon R9 380 2G vs Radeon R9 M270X

Intro

The Radeon R9 380 2G makes use of a 28 nm design. AMD has clocked the core speed at 970 MHz. The GDDR5 RAM runs at a speed of 1425 MHz on this card. It features 1792 SPUs as well as 112 Texture Address Units and 32 ROPs.

Compare all of that to the Radeon R9 M270X, which has GPU core speed of 725 MHz, and 2048 MB of GDDR5 RAM set to run at 1125 MHz through a 128-bit bus. It also is comprised of 640 SPUs, 40 Texture Address Units, and 16 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

In theory, the Radeon R9 380 2G should be much faster than the Radeon R9 M270X overall. (explain)

Radeon R9 380 2G 182400 MB/sec
Radeon R9 M270X 72000 MB/sec
Difference: 110400 (153%)

Texel Rate

The Radeon R9 380 2G is much (approximately 275%) faster with regards to AF than the Radeon R9 M270X. (explain)

Radeon R9 380 2G 108640 Mtexels/sec
Radeon R9 M270X 29000 Mtexels/sec
Difference: 79640 (275%)

Pixel Rate

If using high levels of AA is important to you, then the Radeon R9 380 2G is a better choice, by a large margin. (explain)

Radeon R9 380 2G 31040 Mpixels/sec
Radeon R9 M270X 11600 Mpixels/sec
Difference: 19440 (168%)

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 M270X

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 M270X
Manufacturer AMD AMD
Year June 2015 May 1 2014
Code Name Antigua PRO Venus XT
Memory 2048 MB 2048 MB
Core Speed 970 MHz 725 MHz
Memory Speed 5700 MHz 4500 MHz
Power (Max TDP) 190 watts (Unknown) watts
Bandwidth 182400 MB/sec 72000 MB/sec
Texel Rate 108640 Mtexels/sec 29000 Mtexels/sec
Pixel Rate 31040 Mpixels/sec 11600 Mpixels/sec
Unified Shaders 1792 640
Texture Mapping Units 112 40
Render Output Units 32 16
Bus Type GDDR5 GDDR5
Bus Width 256-bit 128-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 maximum amount of data (counted in MB per second) that can be moved past the external memory interface in a second. The number is calculated by multiplying the card's bus width by its memory clock speed. If it uses DDR type RAM, the result should be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the memory bandwidth, 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 amount of texture map elements (texels) that can be processed per second. This number is worked out by multiplying the total number of texture units by the core speed of the chip. The higher the texel rate, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels per second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card can possibly record to its local memory in a second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of Raster Operations Pipelines by the the card's clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate is also dependant on lots of other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the max fill rate.

Display Prices

Hide Prices

Radeon R9 380 2G

Amazon.com

Check prices at:

Radeon R9 M270X

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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