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Radeon R9 380 4G vs Radeon R9 M365X

Intro

The Radeon R9 380 4G features a GPU core clock speed of 970 MHz, and the 4096 MB of GDDR5 memory is set to run at 1425 MHz through a 256-bit bus. It also is made up of 1792 Stream Processors, 112 TAUs, and 32 Raster Operation Units.

Compare all that to the Radeon R9 M365X, which has a core clock frequency of 925 MHz and a GDDR5 memory speed of 1125 MHz. It also makes use of a 128-bit bus, and makes use of a 28 nm design. It is comprised of 640 SPUs, 40 TAUs, and 16 Raster Operation Units.

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

In theory, the Radeon R9 380 4G is 153% faster than the Radeon R9 M365X overall, because of its greater bandwidth. (explain)

Radeon R9 380 4G 182400 MB/sec
Radeon R9 M365X 72000 MB/sec
Difference: 110400 (153%)

Texel Rate

The Radeon R9 380 4G is a lot (about 194%) faster with regards to anisotropic filtering than the Radeon R9 M365X. (explain)

Radeon R9 380 4G 108640 Mtexels/sec
Radeon R9 M365X 37000 Mtexels/sec
Difference: 71640 (194%)

Pixel Rate

If running with a high screen resolution is important to you, then the Radeon R9 380 4G is a better choice, by far. (explain)

Radeon R9 380 4G 31040 Mpixels/sec
Radeon R9 M365X 14800 Mpixels/sec
Difference: 16240 (110%)

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 4G

Amazon.com

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Radeon R9 M365X

Amazon.com

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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 4G Radeon R9 M365X
Manufacturer AMD AMD
Year June 2015 2015
Code Name Antigua PRO Cape Verde
Memory 4096 MB 4096 MB
Core Speed 970 MHz 925 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 37000 Mtexels/sec
Pixel Rate 31040 Mpixels/sec 14800 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 12
OpenGL Version OpenGL 4.5 OpenGL 4.3

Memory Bandwidth: Bandwidth is the largest amount of data (counted in megabytes per second) that can be transported past the external memory interface in a second. It is calculated by multiplying the bus width by the speed of its memory. If it uses DDR memory, it must be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the bandwidth is, the better the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels the video card could possibly write to the local memory in a second - measured in millions of pixels per second. The number is calculated by multiplying the number of Raster Operations Pipelines by the clock speed of the card. 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 output rate also depends on lots of other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the max fill rate.

Display Prices

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Radeon R9 380 4G

Amazon.com

Check prices at:

Radeon R9 M365X

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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