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Differences What are the advantages of each

Front view of GeForce GT 750M

Reasons to consider the
Nvidia GeForce GT 750M

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Better PassMark score 1,288 vs 810 Around 60% better PassMark score
Higher effective memory clock speed 4,000 MHz vs 2,002 MHz Around 2x higher effective memory clock speed
Higher memory bandwidth 64 GB/s vs 16.02 GB/s Around 4x higher memory bandwidth
More memory 2,048 MB vs 1,024 MB 2x more memory
More render output processors 16 vs 8 Twice as many render output processors
Wider memory bus 128 bit vs 64 bit 2x wider memory bus
More texture mapping units 32 vs 16 Twice as many texture mapping units
Front view of GeForce 940A

Reasons to consider the
Nvidia GeForce 940A

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Higher clock speed 1,029 MHz vs 941 MHz Around 10% higher clock speed
Higher turbo clock speed 1,124 MHz vs 967 MHz More than 15% higher turbo clock speed
Slightly lower TDP 33W vs 50W Around 35% lower TDP

Benchmarks Real world tests of GeForce GT 750M vs 940A

PassMark Industry standard benchmark for overall graphics card performanceData courtesy Passmark

Features Key features of the GeForce GT 750M  vs 940A 

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

GeForce GT 750M
64 GB/s
GeForce 940A
16.02 GB/s

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

GeForce GT 750M
7.53 GPixel/s
GeForce 940A
8.23 GPixel/s

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

GeForce GT 750M
30.11 GTexel/s
GeForce 940A
16.46 GTexel/s

floating point performance How fast the gpu can crunch numbers

GeForce GT 750M
722.7 GFLOPS
GeForce 940A
790.3 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

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