GeForce GT 640M LE 

Released March, 2012
  • 500 MHz
  • 1 GB GDDR5

GPUBoss Review Our evaluation of the GeForce GT 640M LE among Laptop GPUs under 35W TDP

Gaming

GeForce GT 640M LE
5.3
Battlefield 3, Battlefield 4, Bioshock Infinite and 21 more

Graphics

GeForce GT 640M LE
0.0
T-Rex, Manhattan and Cloud Gate Factor

Computing

GeForce GT 640M LE
5.8
Face Detection, Ocean Surface Simulation and 3 more

Performance per Watt

GeForce GT 640M LE
5.0
Battlefield 3, Battlefield 4, Bioshock Infinite and 30 more

Value

GeForce GT 640M LE
n.d.
Battlefield 3, Battlefield 4, Bioshock Infinite and 30 more

Noise and Power

GeForce GT 640M LE
8.8
TDP, Idle Power Consumption, Load Power Consumption and 2 more

3.6

Overall Score

GeForce GT 640M LE
3.6

Benchmarks Real world tests of the GeForce GT 640M LE

Bitcoin mining Data courtesy CompuBench

GeForce GT 640M LE
13.95 mHash/s
GeForce 840M
94.68 mHash/s
GeForce GT 640M
17.38 mHash/s

Face detection Data courtesy CompuBench

GeForce GT 640M LE
6.49 mPixels/s
GeForce 840M
22.54 mPixels/s
GeForce GT 640M
7.86 mPixels/s

T-Rex (GFXBench 3.0) Data courtesy CompuBench

GeForce GT 640M LE
2,181.42
GeForce 840M
3,359.62
GeForce GT 640M
3,339.75

Manhattan (GFXBench 3.0) Data courtesy CompuBench

GeForce GT 640M LE
1,573.09
GeForce 840M
3,715.08
GeForce GT 640M
3,590.88

Fire Strike Factor Data courtesy FutureMark

GeForce GT 640M LE
14.11
GeForce 840M
12.59

Sky Diver Factor Data courtesy FutureMark

GeForce GT 640M LE
89.49
GeForce 840M
120.22

Battlefield 3

GeForce GT 640M LE
8.9

Dirt3

GeForce GT 640M LE
16.8

Specifications Full list of technical specs

gpu

GPU brand Nvidia
GPU name GK107
Market Laptop
Clock speed 500 MHz
Is dual GPU No
Reference card Nvidia GeForce GT 640M LE 500 MHz 1 GB

raw performance

Shading units 384
Texture mapping units 32
Render output processors 16
Pixel rate 4 GPixel/s
Texture rate 16 GTexel/s
Floating-point performance 384 GFLOPS

memory

Memory clock speed 1,000 MHz
Effective memory clock speed 4,000 MHz
Memory bus 128 bit
Memory 1,024 MB
Memory type GDDR5
Memory bandwidth 64 GB/s

noise and power

TDP 20W
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Comments

Showing 2 comments.
did u find anything for this prob?
I have a laptop with this GPU. Its very very bad. You can not use the power of this GPU because it underclock GPU from 500MHz to 100MHZ when the GPU temp go over 70. Intel HD Graphics 4000 is better because you cant use the power of Geforce GT 640M LE.
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