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Differences What are the advantages of each

Front view of GeForce 940M

Reasons to consider the
Nvidia GeForce 940M

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Significantly higher clock speed 1,072 MHz vs 580 MHz Around 85% higher clock speed
Slightly better floating-point performance 823.3 GFLOPS vs 44.8 GFLOPS Around 18.5x better floating-point performance
More shading units 384 vs 16 368 more shading units
Front view of GeForce 9400M

Reasons to consider the
Nvidia GeForce 9400M

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Slightly lower TDP 12W vs 33W 2.7x lower TDP

Features Key features of the GeForce 940M  vs 9400M 

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

GeForce 940M
8.58 GPixel/s
GeForce 9400M
2.32 GPixel/s

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

GeForce 940M
25.73 GTexel/s
GeForce 9400M
4.64 GTexel/s

floating point performance How fast the gpu can crunch numbers

GeForce 940M
823.3 GFLOPS
GeForce 9400M

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


GeForce 940M  vs
GPU brand Nvidia Nvidia
GPU name GM108 C79MX
Clock speed 1,072 MHz 580 MHz
Is dual GPU No No
Reference card Nvidia GeForce 940M 1 GHz 2 GB None

noise and power

TDP 33W 12W

raw performance

GeForce 940M  vs
Shading units 384 16
Texture mapping units 24 8
Render output processors 8 4
Pixel rate 8.58 GPixel/s 2.32 GPixel/s
Texture rate 25.73 GTexel/s 4.64 GTexel/s
Floating-point performance 823.3 GFLOPS 44.8 GFLOPS

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