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Radeon R9 M280X vs Radeon R9 M365X

Intro

The Radeon R9 M280X comes with core speeds of 900 MHz on the GPU, and 1375 MHz on the 4096 MB of GDDR5 RAM. It features 896 SPUs along with 56 TAUs and 16 ROPs.

Compare all of that to the Radeon R9 M365X, which features clock speeds of 925 MHz on the GPU, and 1125 MHz on the 4096 MB of GDDR5 memory. It features 640 SPUs as well as 40 Texture Address Units and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

The Radeon R9 M280X, in theory, should perform a lot faster than the Radeon R9 M365X overall. (explain)

Radeon R9 M280X 88000 MB/sec
Radeon R9 M365X 72000 MB/sec
Difference: 16000 (22%)

Texel Rate

The Radeon R9 M280X should be a lot (more or less 36%) better at anisotropic filtering than the Radeon R9 M365X. (explain)

Radeon R9 M280X 50400 Mtexels/sec
Radeon R9 M365X 37000 Mtexels/sec
Difference: 13400 (36%)

Pixel Rate

If running with high levels of AA is important to you, then the Radeon R9 M365X is the winner, though only just barely. (explain)

Radeon R9 M365X 14800 Mpixels/sec
Radeon R9 M280X 14400 Mpixels/sec
Difference: 400 (3%)

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 M280X

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 M280X Radeon R9 M365X
Manufacturer AMD AMD
Year Feb 9 2015 2015
Code Name Saturn XT Cape Verde
Memory 4096 MB 4096 MB
Core Speed 900 MHz 925 MHz
Memory Speed 5500 MHz 4500 MHz
Power (Max TDP) 75 watts (Unknown) watts
Bandwidth 88000 MB/sec 72000 MB/sec
Texel Rate 50400 Mtexels/sec 37000 Mtexels/sec
Pixel Rate 14400 Mpixels/sec 14800 Mpixels/sec
Unified Shaders 896 640
Texture Mapping Units 56 40
Render Output Units 16 16
Bus Type GDDR5 GDDR5
Bus Width 128-bit 128-bit
Fab Process 28 nm 28 nm
Transistors (Unknown) 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: Memory bandwidth is the maximum amount of data (measured in megabytes per second) that can be transported across the external memory interface within a second. It's calculated by multiplying the card's interface width by its memory speed. If it uses DDR memory, it must be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the faster 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 amount of texture map elements (texels) that can be applied in one second. This number is calculated by multiplying the total number of texture units by the core speed of the chip. The better the texel rate, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in a second.

Pixel Rate: Pixel rate is the most pixels that the graphics card could possibly write to its local memory in a second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of Raster Operations Pipelines by the clock speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate also depends on lots of other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.

Display Prices

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Radeon R9 M280X

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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