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Differences What are the advantages of each

Front view of Radeon R5 M420

Reasons to consider the
AMD Radeon R5 M420

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More memory 4,096 MB vs 2,048 MB 2x more memory
Higher memory clock speed 1,000 MHz vs 900 MHz More than 10% higher memory clock speed
Front view of GeForce 920M

Reasons to consider the
Nvidia GeForce 920M

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Higher clock speed 954 MHz vs 780 MHz More than 20% higher clock speed
Higher texture rate 30.53 GTexel/s vs 17.1 GTexel/s Around 80% higher texture rate
More render output processors 16 vs 8 Twice as many render output processors
More texture mapping units 32 vs 20 12 more texture mapping units

Features Key features of the Radeon R5 M420  vs GeForce 920M 

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

Radeon R5 M420
16 GB/s
GeForce 920M
14.4 GB/s

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

Radeon R5 M420
6.84 GPixel/s
GeForce 920M
7.63 GPixel/s

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

Radeon R5 M420
17.1 GTexel/s
GeForce 920M
30.53 GTexel/s

floating point performance How fast the gpu can crunch numbers

Radeon R5 M420
547.2 GFLOPS
GeForce 920M
732.7 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 R5 M420  vs
GeForce 920M 
GPU brand AMD Nvidia
GPU name Jet GK208
Market Laptop Laptop
Clock speed 780 MHz 954 MHz
Is dual GPU No No
Reference card None Nvidia GeForce 920M 775 MHz 1 GB

raw performance

Shading units 320 384
Texture mapping units 20 32
Render output processors 8 16
Pixel rate 6.84 GPixel/s 7.63 GPixel/s
Texture rate 17.1 GTexel/s 30.53 GTexel/s
Floating-point performance 547.2 GFLOPS 732.7 GFLOPS

memory

Radeon R5 M420  vs
GeForce 920M 
Memory clock speed 1,000 MHz 900 MHz
Effective memory clock speed 2,000 MHz 1,800 MHz
Memory bus 64 bit 64 bit
Memory 4,096 MB 2,048 MB
Memory type DDR3 DDR3
Memory bandwidth 16 GB/s 14.4 GB/s

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