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Differences What are the advantages of each

Front view of GeForce GTX 950M

Reasons to consider the
Nvidia GeForce GTX 950M

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Significantly lower TDP 75W vs 150W 2x lower TDP
Front view of GeForce GTX 1080 Mobile

Reasons to consider the
Nvidia GeForce GTX 1080 Mobile

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Much higher clock speed 1,556 MHz vs 993 MHz More than 55% higher clock speed
Much better floating-point performance 7,967 GFLOPS vs 1,271 GFLOPS More than 6.2x better floating-point performance
Much higher effective memory clock speed 10,008 MHz vs 1,800 MHz More than 5.5x higher effective memory clock speed
Much higher texture rate 249 GTexel/s vs 39.7 GTexel/s More than 6.2x higher texture rate
Much higher pixel rate 99.6 GPixel/s vs 15.89 GPixel/s More than 6.2x higher pixel rate
Significantly more memory 8,192 MB vs 4,096 MB 2x more memory
Many more shading units 2,560 vs 640 1920 more shading units
Many more texture mapping units 160 vs 40 120 more texture mapping units
Much higher turbo clock speed 1,771 MHz vs 1,124 MHz Around 60% higher turbo clock speed
Many more render output processors 64 vs 16 48 more render output processors
Significantly wider memory bus 256 bit vs 128 bit 2x wider memory bus
Significantly higher memory clock speed 1,251 MHz vs 900 MHz Around 40% higher memory clock speed

Features Key features of the GeForce GTX 950M  vs 1080 Mobile 

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

GeForce GTX 950M
15.89 GPixel/s
GeForce GTX 1080 Mobile
99.6 GPixel/s

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

GeForce GTX 950M
39.7 GTexel/s

floating point performance How fast the gpu can crunch numbers

GeForce GTX 950M
1,271 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

Specifications Full list of technical specs

gpu

GeForce GTX 950M  vs
1080 Mobile 
GPU brand Nvidia Nvidia
GPU name GM107 GP104
Market Laptop Laptop
Clock speed 993 MHz 1,556 MHz
Turbo clock speed 1,124 MHz 1,771 MHz
Is dual GPU No No
Reference card None None

raw performance

Shading units 640 2,560
Texture mapping units 40 160
Render output processors 16 64
Pixel rate 15.89 GPixel/s 99.6 GPixel/s
Texture rate 39.7 GTexel/s 249 GTexel/s
Floating-point performance 1,271 GFLOPS 7,967 GFLOPS

memory

GeForce GTX 950M  vs
1080 Mobile 
Memory clock speed 900 MHz 1,251 MHz
Effective memory clock speed 1,800 MHz 10,008 MHz
Memory bus 128 bit 256 bit
Memory 4,096 MB 8,192 MB
Memory type DDR3 GDDR5

noise and power

TDP 75W 150W

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