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Differences What are the advantages of each

Front view of Radeon R9 M395X Mac

Reasons to consider the
AMD Radeon R9 M395X Mac

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GPUBoss is not aware of any important advantages of the R9 M395X Mac Edition vs the Pro 580.

Front view of Radeon Pro 580

Reasons to consider the
AMD Radeon Pro 580

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Significantly higher clock speed 1,257 MHz vs 909 MHz Around 40% higher clock speed
More memory 8,192 MB vs 4,096 MB 2x more memory
Higher effective memory clock speed 8,000 MHz vs 5,460 MHz More than 45% higher effective memory clock speed
Better floating-point performance 6,175 GFLOPS vs 3,723 GFLOPS More than 65% better floating-point performance
Higher memory bandwidth 256 GB/s vs 174.7 GB/s More than 45% higher memory bandwidth
Higher texture rate 193 GTexel/s vs 116.4 GTexel/s More than 65% higher texture rate
Higher pixel rate 42.9 GPixel/s vs 29.09 GPixel/s More than 45% higher pixel rate
Significantly higher memory clock speed 2,000 MHz vs 1,365 MHz More than 45% higher memory clock speed
Significantly lower TDP 150W vs 250W 40% lower TDP

Features Key features of the Radeon R9 M395X Mac  vs Pro 580 

memory bandwidth Rate at which data can be read from or stored in onboard memory

Radeon R9 M395X Mac
174.7 GB/s
Radeon Pro 580
256 GB/s

pixel rate Number of pixels a graphics card can render to the screen every second

Radeon R9 M395X Mac
29.09 GPixel/s
Radeon Pro 580
42.9 GPixel/s

texture rate Speed at which a graphics card can perform texture mapping

Radeon R9 M395X Mac
116.4 GTexel/s
Radeon Pro 580
193 GTexel/s

floating point performance How fast the gpu can crunch numbers

Radeon R9 M395X Mac
3,723 GFLOPS
Radeon Pro 580
6,175 GFLOPS

shading units Subcomponents of the gpu, these run in parallel to enable fast pixel shading

texture mapping units Built into each gpu, these resize and rotate bitmaps for texturing scenes

Specifications Full list of technical specs


Radeon R9 M395X Mac  vs
Pro 580 
GPU name Amethyst Polaris 20
Clock speed 909 MHz 1,257 MHz
Is dual GPU No No
Reference card None None

raw performance

Shading units 2,048 2,304
Texture mapping units 128 144
Render output processors 32 32
Compute units 32 36
Pixel rate 29.09 GPixel/s 42.9 GPixel/s
Texture rate 116.4 GTexel/s 193 GTexel/s
Floating-point performance 3,723 GFLOPS 6,175 GFLOPS


Radeon R9 M395X Mac  vs
Pro 580 
Memory clock speed 1,365 MHz 2,000 MHz
Effective memory clock speed 5,460 MHz 8,000 MHz
Memory bus 256 bit 256 bit
Memory 4,096 MB 8,192 MB
Memory type GDDR5 GDDR5
Memory bandwidth 174.7 GB/s 256 GB/s

noise and power

TDP 250W 150W


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