GPUBoss Review Our evaluation of 745M vs 840M among Laptop GPUs

Gaming

Battlefield 3, Battlefield 4, Bioshock Infinite and 21 more

Graphics

T-Rex, Manhattan, Cloud Gate Factor, Sky Diver Factor and 1 more

Computing

Face Detection, Ocean Surface Simulation and 3 more

Performance per Watt

Battlefield 3, Battlefield 4, Bioshock Infinite and 32 more

Value

Battlefield 3, Battlefield 4, Bioshock Infinite and 32 more

Noise and Power

TDP, Idle Power Consumption, Load Power Consumption and 2 more

5.9

Overall Score

Winner
Nvidia GeForce GT 745M 

GPUBoss recommends the Nvidia GeForce GT 745M  based on its gaming, benchmarks and compute performance.

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VS

Differences What are the advantages of each

Front view of GeForce GT 745M

Reasons to consider the
Nvidia GeForce GT 745M

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Higher effective memory clock speed 4,000 MHz vs 2,002 MHz Around 2x higher effective memory clock speed
Better 3DMark 11 graphics score 13,462.5 vs 10,332 More than 30% better 3DMark 11 graphics score
Much higher diablo III framerate 58.94 fps vs 17.7 fps More than 3.2x higher diablo III framerate
Higher memory bandwidth 64 GB/s vs 16.02 GB/s Around 4x higher memory bandwidth
Much better manhattan score 3,719.58 vs 1,855.62 More than 2x better manhattan score
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
Better PassMark direct compute score 981 vs 726 More than 35% better PassMark direct compute score
Front view of GeForce 840M

Reasons to consider the
Nvidia GeForce 840M

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Much higher clock speed 1,029 MHz vs 549 MHz More than 85% higher clock speed
Better particle simulation score 184.99 mInteraction/s vs 45.47 mInteraction/s More than 4x better particle simulation score

Benchmarks Real world tests of GeForce GT 745M vs 840M

Bitcoin mining Data courtesy CompuBench

GeForce GT 745M
19.32 mHash/s
GeForce 840M
94.68 mHash/s

Face detection Data courtesy CompuBench

GeForce GT 745M
10.71 mPixels/s
GeForce 840M
22.54 mPixels/s

T-Rex (GFXBench 3.0) Data courtesy CompuBench

GeForce GT 745M
3,362.98
GeForce 840M
3,359.62

Manhattan (GFXBench 3.0) Data courtesy CompuBench

GeForce GT 745M
3,719.58
GeForce 840M
1,855.62

Fire Strike Factor Data courtesy FutureMark

Sky Diver Factor Data courtesy FutureMark

Battlefield 4

Comments

Showing 3 comments.
I'm currently looking at a pc with NVIDIA GeForce 840M and another pc with NVIDIA GeForce GTX745, 2GB and I don't know what one is better coz some people have said the 840M and some people have also said the GTX 745 coz of the 2gb it helps a lot can someone that knows more about the inside of computers please tell me what one is better contact me on stegcon20@gmail.com thanks for the help
This is the old 840M. The current one goes up to 1.2 GHz, and has 2 GB.
745M better more than really 840M thus k450jf better than k450jn in gpu chip set
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