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Differences What are the advantages of each

Front view of Radeon R9 M395 Mac

Reasons to consider the
AMD Radeon R9 M395 Mac

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GPUBoss is not aware of any important advantages of the R9 M395 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 3,258 GFLOPS Around 90% 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 101.8 GTexel/s Around 90% 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
More shading units 2,304 vs 1,792 512 more shading units
More texture mapping units 144 vs 112 32 more texture mapping units
More compute units 36 vs 28 8 more compute units
Significantly lower TDP 150W vs 250W 40% lower TDP

Features Key features of the Radeon R9 M395 Mac  vs Pro 580 

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

Radeon R9 M395 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 M395 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 M395 Mac
101.8 GTexel/s
Radeon Pro 580
193 GTexel/s

floating point performance How fast the gpu can crunch numbers

Radeon R9 M395 Mac
3,258 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

gpu

Radeon R9 M395 Mac  vs
Pro 580 
GPU brand AMD AMD
GPU name Grenada Polaris 20
Clock speed 909 MHz 1,257 MHz
Is dual GPU No No
Reference card None None

raw performance

Shading units 1,792 2,304
Texture mapping units 112 144
Render output processors 32 32
Compute units 28 36
Pixel rate 29.09 GPixel/s 42.9 GPixel/s
Texture rate 101.8 GTexel/s 193 GTexel/s
Floating-point performance 3,258 GFLOPS 6,175 GFLOPS

memory

Radeon R9 M395 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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