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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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Much higher clock speed 993 MHz vs 400 MHz Around 2.5x higher clock speed
Significantly more memory 4,096 MB vs 1,024 MB 4x more memory
Better floating-point performance 1,271 GFLOPS vs 128 GFLOPS Around 10x better floating-point performance
Higher texture rate 39.7 GTexel/s vs 12.8 GTexel/s More than 3x higher texture rate
More shading units 640 vs 64 576 more shading units
Higher pixel rate 15.89 GPixel/s vs 6.4 GPixel/s Around 2.5x higher pixel rate
Higher memory clock speed 900 MHz vs 800 MHz Around 15% higher memory clock speed
Front view of GeForce GTS 150M

Reasons to consider the
Nvidia GeForce GTS 150M

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Higher memory bandwidth 51.2 GB/s vs 28.8 GB/s Around 80% higher memory bandwidth
Significantly wider memory bus 256 bit vs 128 bit 2x wider memory bus
Lower TDP 45W vs 75W 40% lower TDP

Features Key features of the GeForce GTX 950M  vs GTS 150M 

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

GeForce GTX 950M
28.8 GB/s
GeForce GTS 150M
51.2 GB/s

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

GeForce GTX 950M
15.89 GPixel/s
GeForce GTS 150M
6.4 GPixel/s

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

GeForce GTX 950M
39.7 GTexel/s
GeForce GTS 150M
12.8 GTexel/s

floating point performance How fast the gpu can crunch numbers

GeForce GTX 950M
1,271 GFLOPS
GeForce GTS 150M
128 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

GeForce GTX 950M  vs
GTS 150M 
GPU brand Nvidia Nvidia
GPU name GM107 G94
Market Laptop Laptop
Clock speed 993 MHz 400 MHz
Is dual GPU No No
Reference card None None

raw performance

Shading units 640 64
Texture mapping units 40 32
Render output processors 16 16
Pixel rate 15.89 GPixel/s 6.4 GPixel/s
Texture rate 39.7 GTexel/s 12.8 GTexel/s
Floating-point performance 1,271 GFLOPS 128 GFLOPS

memory

GeForce GTX 950M  vs
GTS 150M 
Memory clock speed 900 MHz 800 MHz
Effective memory clock speed 1,800 MHz 1,600 MHz
Memory bus 128 bit 256 bit
Memory 4,096 MB 1,024 MB
Memory type DDR3 GDDR3
Memory bandwidth 28.8 GB/s 51.2 GB/s

noise and power

TDP 75W 45W

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