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Differences What are the advantages of each

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 16.02 GB/s Around 3.2x higher memory bandwidth
Much wider memory bus 256 bit vs 64 bit 4x wider memory bus
More render output processors 16 vs 8 Twice as many render output processors
Front view of GeForce 940MX

Reasons to consider the
Nvidia GeForce 940MX

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Much higher clock speed 1,122 MHz vs 400 MHz More than 2.8x higher clock speed
More memory 2,048 MB vs 1,024 MB 2x more memory
Better floating-point performance 861.7 GFLOPS vs 128 GFLOPS Around 6.8x better floating-point performance
Slightly higher texture rate 26.93 GTexel/s vs 12.8 GTexel/s More than 2x higher texture rate
More shading units 384 vs 64 320 more shading units
Higher memory clock speed 1,001 MHz vs 800 MHz More than 25% higher memory clock speed
Lower TDP 23W vs 45W Around 50% lower TDP

Features Key features of the GeForce GTS 150M  vs 940MX 

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

GeForce GTS 150M
51.2 GB/s
GeForce 940MX
16.02 GB/s

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

GeForce GTS 150M
6.4 GPixel/s
GeForce 940MX
8.98 GPixel/s

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

GeForce GTS 150M
12.8 GTexel/s
GeForce 940MX
26.93 GTexel/s

floating point performance How fast the gpu can crunch numbers

GeForce GTS 150M
128 GFLOPS
GeForce 940MX
861.7 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

GeForce GTS 150M  vs
940MX 
GPU brand Nvidia Nvidia
GPU name G94 GM108
Market Laptop Laptop
Clock speed 400 MHz 1,122 MHz
Is dual GPU No No
Reference card None None

raw performance

Shading units 64 384
Texture mapping units 32 24
Render output processors 16 8
Pixel rate 6.4 GPixel/s 8.98 GPixel/s
Texture rate 12.8 GTexel/s 26.93 GTexel/s
Floating-point performance 128 GFLOPS 861.7 GFLOPS

memory

GeForce GTS 150M  vs
940MX 
Memory clock speed 800 MHz 1,001 MHz
Effective memory clock speed 1,600 MHz 2,002 MHz
Memory bus 256 bit 64 bit
Memory 1,024 MB 2,048 MB
Memory type GDDR3 DDR3
Memory bandwidth 51.2 GB/s 16.02 GB/s

noise and power

TDP 45W 23W

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