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Differences What are the advantages of each

Front view of Radeon RX Vega 64 Nano

Reasons to consider the
AMD Radeon RX Vega 64 Nano

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More memory 8,192 MB vs 4,096 MB 2x more memory
Higher clock speed 1,156 MHz vs 1,000 MHz More than 15% higher clock speed
Better floating-point performance 10,215 GFLOPS vs 8,192 GFLOPS Around 25% better floating-point performance
Higher texture rate 319.2 GTexel/s vs 256 GTexel/s Around 25% higher texture rate
Higher pixel rate 79.81 GPixel/s vs 64 GPixel/s Around 25% higher pixel rate
Slightly higher effective memory clock speed 1,600 MHz vs 1,000 MHz 60% higher effective memory clock speed
Higher memory clock speed 800 MHz vs 500 MHz 60% higher memory clock speed
Front view of Radeon R9 Nano

Reasons to consider the
AMD Radeon R9 Nano

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Much wider memory bus 4,096 bit vs 2,048 bit 2x wider memory bus
Lower TDP 175W vs 250W 30% lower TDP

Features Key features of the Radeon RX Vega 64 Nano  vs R9 Nano 

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

Radeon RX Vega 64 Nano
79.81 GPixel/s
Radeon R9 Nano
64 GPixel/s

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

Radeon RX Vega 64 Nano
319.2 GTexel/s
Radeon R9 Nano
256 GTexel/s

floating point performance How fast the gpu can crunch numbers

Radeon RX Vega 64 Nano
10,215 GFLOPS
Radeon R9 Nano
8,192 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

compute units Discrete cores within the GPU

Specifications Full list of technical specs

gpu

Radeon RX Vega 64 Nano  vs
R9 Nano 
GPU brand AMD AMD
GPU name Vega 10 Fiji
Clock speed 1,156 MHz 1,000 MHz
Is dual GPU No No
Reference card None None

raw performance

Shading units 4,096 4,096
Texture mapping units 256 256
Render output processors 64 64
Compute units 64 64
Pixel rate 79.81 GPixel/s 64 GPixel/s
Texture rate 319.2 GTexel/s 256 GTexel/s
Floating-point performance 10,215 GFLOPS 8,192 GFLOPS

memory

Radeon RX Vega 64 Nano  vs
R9 Nano 
Memory clock speed 800 MHz 500 MHz
Effective memory clock speed 1,600 MHz 1,000 MHz
Memory bus 2,048 bit 4,096 bit
Memory 8,192 MB 4,096 MB

noise and power

TDP 250W 175W

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