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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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Significantly higher effective memory clock speed 5,460 MHz vs 1,560 MHz 3.5x higher effective memory clock speed
Significantly higher memory clock speed 1,365 MHz vs 780 MHz 75% higher memory clock speed
Front view of Radeon Pro Vega 64

Reasons to consider the
AMD Radeon Pro Vega 64

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Much more memory 16,384 MB vs 4,096 MB 4x more memory
Much better floating-point performance 11,059 GFLOPS vs 3,723 GFLOPS Around 3x better floating-point performance
Significantly higher clock speed 1,250 MHz vs 909 MHz Around 40% higher clock speed
Significantly higher pixel rate 86.4 GPixel/s vs 29.09 GPixel/s Around 3x higher pixel rate
Significantly more shading units 4,096 vs 2,048 Twice as many shading units
Significantly more texture mapping units 256 vs 128 Twice as many texture mapping units
Much wider memory bus 2,048 bit vs 256 bit 8x wider memory bus
Significantly more render output processors 64 vs 32 Twice as many render output processors
Significantly more compute units 64 vs 32 Twice as many compute units
Lower TDP 225W vs 250W 10% lower TDP

Features Key features of the Radeon R9 M395X Mac  vs Pro Vega 64 

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 Vega 64
86.4 GPixel/s

floating point performance How fast the gpu can crunch numbers

Radeon R9 M395X Mac
3,723 GFLOPS
Radeon Pro Vega 64
11,059 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

render output processors GPU commponents responsible for transform pixels as they flow between memory buffers

compute units Discrete cores within the GPU

Specifications Full list of technical specs

gpu

Radeon R9 M395X Mac  vs
Pro Vega 64 
GPU brand AMD AMD
GPU name Amethyst Vega 10
Clock speed 909 MHz 1,250 MHz
Is dual GPU No No
Reference card None None

raw performance

Shading units 2,048 4,096
Texture mapping units 128 256
Render output processors 32 64
Compute units 32 64
Pixel rate 29.09 GPixel/s 86.4 GPixel/s
Floating-point performance 3,723 GFLOPS 11,059 GFLOPS

memory

Radeon R9 M395X Mac  vs
Pro Vega 64 
Memory clock speed 1,365 MHz 780 MHz
Effective memory clock speed 5,460 MHz 1,560 MHz
Memory bus 256 bit 2,048 bit
Memory 4,096 MB 16,384 MB

noise and power

TDP 250W 225W

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