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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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Slightly higher clock speed 909 MHz vs 836 MHz Around 10% higher clock speed
Front view of GeForce GTX TITAN

Reasons to consider the
Nvidia GeForce GTX TITAN

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Higher memory bandwidth 288.4 GB/s vs 174.7 GB/s More than 65% higher memory bandwidth
More memory 6,144 MB vs 4,096 MB 50% more memory
Higher texture rate 187.3 GTexel/s vs 116.4 GTexel/s More than 60% higher texture rate
Significantly more texture mapping units 224 vs 128 96 more texture mapping units
Higher pixel rate 46.8 GPixel/s vs 29.09 GPixel/s More than 60% higher pixel rate
Slightly better floating-point performance 4,494 GFLOPS vs 3,723 GFLOPS More than 20% better floating-point performance
Slightly higher effective memory clock speed 6,008 MHz vs 5,460 MHz More than 10% higher effective memory clock speed
More render output processors 48 vs 32 16 more render output processors
More shading units 2,688 vs 2,048 640 more shading units
Higher memory clock speed 1,502 MHz vs 1,365 MHz More than 10% higher memory clock speed

Features Key features of the Radeon R9 M395X Mac  vs GeForce GTX TITAN 

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

Radeon R9 M395X Mac
174.7 GB/s
GeForce GTX TITAN
288.4 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
GeForce GTX TITAN
46.8 GPixel/s

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

Radeon R9 M395X Mac
116.4 GTexel/s
GeForce GTX TITAN
187.3 GTexel/s

floating point performance How fast the gpu can crunch numbers

Radeon R9 M395X Mac
3,723 GFLOPS
GeForce GTX TITAN
4,494 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 M395X Mac  vs
GeForce GTX TITAN 
GPU brand AMD Nvidia
GPU name Amethyst GK110
Market Laptop Desktop
Clock speed 909 MHz 836 MHz
Is dual GPU No No
Reference card None None

raw performance

Shading units 2,048 2,688
Texture mapping units 128 224
Render output processors 32 48
Pixel rate 29.09 GPixel/s 46.8 GPixel/s
Texture rate 116.4 GTexel/s 187.3 GTexel/s
Floating-point performance 3,723 GFLOPS 4,494 GFLOPS

memory

Radeon R9 M395X Mac  vs
GeForce GTX TITAN 
Memory clock speed 1,365 MHz 1,502 MHz
Effective memory clock speed 5,460 MHz 6,008 MHz
Memory bus 256 bit 384 bit
Memory 4,096 MB 6,144 MB
Memory type GDDR5 GDDR5
Memory bandwidth 174.7 GB/s 288.4 GB/s

noise and power

TDP 250W 250W

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