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Radeon R9 M385X vs Radeon RX Vega 56

Intro

The Radeon R9 M385X has a GPU clock speed of 1100 MHz, and the 4096 MB of GDDR5 RAM is set to run at 1500 MHz through a 128-bit bus. It also is made up of 896 SPUs, 56 TAUs, and 16 ROPs.

Compare those specs to the Radeon RX Vega 56, which has a core clock speed of 1156 MHz and a HBM2 memory speed of 1600 MHz. It also uses a 2048-bit bus, and makes use of a 14 nm design. It features 3584 SPUs, 224 Texture Address Units, and 64 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

As far as performance goes, the Radeon RX Vega 56 should in theory be a lot better than the Radeon R9 M385X in general. (explain)

Radeon RX Vega 56 419430 MB/sec
Radeon R9 M385X 96000 MB/sec
Difference: 323430 (337%)

Texel Rate

The Radeon RX Vega 56 will be quite a bit (more or less 320%) more effective at AF than the Radeon R9 M385X. (explain)

Radeon RX Vega 56 258944 Mtexels/sec
Radeon R9 M385X 61600 Mtexels/sec
Difference: 197344 (320%)

Pixel Rate

The Radeon RX Vega 56 should be a lot (more or less 320%) more effective at full screen anti-aliasing than the Radeon R9 M385X, and able to handle higher screen resolutions more effectively. (explain)

Radeon RX Vega 56 73984 Mpixels/sec
Radeon R9 M385X 17600 Mpixels/sec
Difference: 56384 (320%)

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 M385X

Amazon.com

Radeon RX Vega 56

Amazon.com

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 M385X Radeon RX Vega 56
Manufacturer AMD AMD
Year 2015 September 2017
Code Name Bonaire Vega 10 XL
Memory 4096 MB 8192 MB
Core Speed 1100 MHz 1156 MHz
Memory Speed 6000 MHz 1600 MHz
Power (Max TDP) (Unknown) watts 210 watts
Bandwidth 96000 MB/sec 419430 MB/sec
Texel Rate 61600 Mtexels/sec 258944 Mtexels/sec
Pixel Rate 17600 Mpixels/sec 73984 Mpixels/sec
Unified Shaders 896 3584
Texture Mapping Units 56 224
Render Output Units 16 64
Bus Type GDDR5 HBM2
Bus Width 128-bit 2048-bit
Fab Process 28 nm 14 nm
Transistors (Unknown) million 12500 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 maximum amount of data (counted in MB per second) that can be transported over the external memory interface within a second. It is calculated by multiplying the bus width by its memory clock speed. If it uses DDR type memory, it must be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be applied in one second. This number is calculated by multiplying the total texture units by the core speed of the chip. The higher this number, the better the video card will be at 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 card could possibly write to its local memory in a second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of Render Output Units by the the core 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 fill rate also depends on many other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.

Display Prices

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Radeon R9 M385X

Amazon.com

Radeon RX Vega 56

Amazon.com

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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