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Radeon R9 M380 vs Radeon RX 580

Intro

The Radeon R9 M380 comes with a GPU core speed of 1000 MHz, and the 4096 MB of GDDR5 memory is set to run at 1500 MHz through a 128-bit bus. It also features 640 SPUs, 40 Texture Address Units, and 16 ROPs.

Compare all of that to the Radeon RX 580, which has GPU core speed of 1257 MHz, and 8192 MB of GDDR5 RAM set to run at 2000 MHz through a 256-bit bus. It also features 2304 SPUs, 144 Texture Address Units, and 32 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

The Radeon RX 580 should in theory be a lot faster than the Radeon R9 M380 overall. (explain)

Radeon RX 580 262144 MB/sec
Radeon R9 M380 96000 MB/sec
Difference: 166144 (173%)

Texel Rate

The Radeon RX 580 will be quite a bit (more or less 353%) better at AF than the Radeon R9 M380. (explain)

Radeon RX 580 181008 Mtexels/sec
Radeon R9 M380 40000 Mtexels/sec
Difference: 141008 (353%)

Pixel Rate

The Radeon RX 580 should be a lot (more or less 151%) better at anti-aliasing than the Radeon R9 M380, and also should be capable of handling higher resolutions more effectively. (explain)

Radeon RX 580 40224 Mpixels/sec
Radeon R9 M380 16000 Mpixels/sec
Difference: 24224 (151%)

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 M380

Amazon.com

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Radeon RX 580

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 M380 Radeon RX 580
Manufacturer AMD AMD
Year 2015 April 2017
Code Name Cape Verde Polaris 20
Memory 4096 MB 8192 MB
Core Speed 1000 MHz 1257 MHz
Memory Speed 6000 MHz 8000 MHz
Power (Max TDP) (Unknown) watts 185 watts
Bandwidth 96000 MB/sec 262144 MB/sec
Texel Rate 40000 Mtexels/sec 181008 Mtexels/sec
Pixel Rate 16000 Mpixels/sec 40224 Mpixels/sec
Unified Shaders 640 2304
Texture Mapping Units 40 144
Render Output Units 16 32
Bus Type GDDR5 GDDR5
Bus Width 128-bit 256-bit
Fab Process 28 nm 14 nm
Transistors (Unknown) million 5700 million
Bus PCIe 3.0 x16 PCIe 3.0 x16
DirectX Version DirectX 12 DirectX 12.0
OpenGL Version OpenGL 4.3 OpenGL 4.5

Memory Bandwidth: Bandwidth is the max amount of information (measured in MB per second) that can be moved across the external memory interface in one second. It is calculated by multiplying the interface width by its memory speed. If the card has DDR type RAM, it must be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the bandwidth is, the better the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the most pixels that the graphics chip could possibly record to the local memory in a second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate also depends on quite a few other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the max fill rate.

Display Prices

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Radeon R9 M380

Amazon.com

Check prices at:

Radeon RX 580

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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