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Differences What are the advantages of each

Front view of GeForce GTX 880M

Reasons to consider the
Nvidia GeForce GTX 880M

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Much more memory 8,192 MB vs 256 MB 32x more memory
Much higher clock speed 954 MHz vs 500 MHz More than 90% higher clock speed
Significantly higher memory bandwidth 160 GB/s vs 25.34 GB/s More than 6.2x higher memory bandwidth
Significantly better floating-point performance 2,930.7 GFLOPS vs 80 GFLOPS Around 36.8x better floating-point performance
Significantly higher effective memory clock speed 5,000 MHz vs 1,584 MHz Around 3.2x higher effective memory clock speed
Much higher texture rate 122.1 GTexel/s vs 8 GTexel/s More than 15.2x higher texture rate
Many more texture mapping units 128 vs 16 112 more texture mapping units
Higher pixel rate 30.53 GPixel/s vs 4 GPixel/s Around 7.8x higher pixel rate
Many more shading units 1,536 vs 32 1504 more shading units
Significantly more render output processors 32 vs 8 24 more render output processors
Significantly wider memory bus 256 bit vs 128 bit 2x wider memory bus
Significantly higher memory clock speed 1,250 MHz vs 792 MHz Around 60% higher memory clock speed
Front view of GeForce GT 120M Mac

Reasons to consider the
Nvidia GeForce GT 120M Mac

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Significantly lower TDP 14W vs 122W 8.7x lower TDP

Features Key features of the GeForce GTX 880M  vs GT 120M Mac 

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

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

GeForce GTX 880M
30.53 GPixel/s
GeForce GT 120M Mac
4 GPixel/s

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

GeForce GTX 880M
122.1 GTexel/s
GeForce GT 120M Mac
8 GTexel/s

floating point performance How fast the gpu can crunch numbers

GeForce GTX 880M
2,930.7 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


GeForce GTX 880M  vs
GT 120M Mac 
GPU brand Nvidia Nvidia
GPU name GK104 G96C
Market Laptop Laptop
Clock speed 954 MHz 500 MHz
Is dual GPU No No
Reference card None None

raw performance

Shading units 1,536 32
Texture mapping units 128 16
Render output processors 32 8
Pixel rate 30.53 GPixel/s 4 GPixel/s
Texture rate 122.1 GTexel/s 8 GTexel/s
Floating-point performance 2,930.7 GFLOPS 80 GFLOPS


GeForce GTX 880M  vs
GT 120M Mac 
Memory clock speed 1,250 MHz 792 MHz
Effective memory clock speed 5,000 MHz 1,584 MHz
Memory bus 256 bit 128 bit
Memory 8,192 MB 256 MB
Memory type GDDR5 GDDR3
Memory bandwidth 160 GB/s 25.34 GB/s

noise and power

TDP 122W 14W


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