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Radeon R9 270 vs Radeon R9 M380

Intro

The Radeon R9 270 makes use of a 28 nm design. AMD has set the core frequency at 900 MHz. The GDDR5 memory runs at a speed of 1400 MHz on this specific card. It features 1280 SPUs along with 80 TAUs and 32 ROPs.

Compare all that to the Radeon R9 M380, which has a core clock frequency of 1000 MHz and a GDDR5 memory speed of 1500 MHz. It also uses a 128-bit memory bus, and uses a 28 nm design. It is made up 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

Theoretically, the Radeon R9 270 should be quite a bit faster than the Radeon R9 M380 overall. (explain)

Radeon R9 270 179200 MB/sec
Radeon R9 M380 96000 MB/sec
Difference: 83200 (87%)

Texel Rate

The Radeon R9 270 will be quite a bit (approximately 80%) faster with regards to AF than the Radeon R9 M380. (explain)

Radeon R9 270 72000 Mtexels/sec
Radeon R9 M380 40000 Mtexels/sec
Difference: 32000 (80%)

Pixel Rate

If using a high screen resolution is important to you, then the Radeon R9 270 is a better choice, by a large margin. (explain)

Radeon R9 270 28800 Mpixels/sec
Radeon R9 M380 16000 Mpixels/sec
Difference: 12800 (80%)

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 270

Amazon.com

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Radeon R9 M380

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 270 Radeon R9 M380
Manufacturer AMD AMD
Year November 2013 2015
Code Name Curacao Pro Cape Verde
Memory 2048 MB 4096 MB
Core Speed 900 MHz 1000 MHz
Memory Speed 5600 MHz 6000 MHz
Power (Max TDP) 150 watts (Unknown) watts
Bandwidth 179200 MB/sec 96000 MB/sec
Texel Rate 72000 Mtexels/sec 40000 Mtexels/sec
Pixel Rate 28800 Mpixels/sec 16000 Mpixels/sec
Unified Shaders 1280 640
Texture Mapping Units 80 40
Render Output Units 32 16
Bus Type GDDR5 GDDR5
Bus Width 256-bit 128-bit
Fab Process 28 nm 28 nm
Transistors 2800 million (Unknown) million
Bus PCIe 3.0 x16 PCIe 3.0 x16
DirectX Version DirectX 11.2 DirectX 12
OpenGL Version OpenGL 4.3 OpenGL 4.3

Memory Bandwidth: Bandwidth is the max amount of information (measured in MB per second) that can be transported over the external memory interface within a second. It is calculated by multiplying the interface width by its memory clock speed. In the case of DDR memory, it must be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be processed per second. This figure is calculated by multiplying the total amount of texture units of the card by the core speed of the chip. The better this number, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels per second.

Pixel Rate: Pixel rate is the most pixels that the graphics chip could possibly write to its local memory in a second - measured in millions of pixels per second. The number is calculated by multiplying the number of ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate also depends on lots of other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the max fill rate.

Display Prices

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Radeon R9 270

Amazon.com

Check prices at:

Radeon R9 M380

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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