GeForce GT 645M 

Released October, 2012
  • 709 MHz
  • 2 GB DDR3
4.8 Out of 10

GPUBoss Review Our evaluation of the GeForce GT 645M among Laptop GPUs under 35W TDP

Gaming

GeForce GT 645M
5.4
Battlefield 3, Battlefield 4, Bioshock Infinite and 21 more

Graphics

GeForce GT 645M
2.3
T-Rex, Manhattan and Cloud Gate Factor

Computing

GeForce GT 645M
6.3
Face Detection, Ocean Surface Simulation and 3 more

Performance per Watt

GeForce GT 645M
4.9
Battlefield 3, Battlefield 4, Bioshock Infinite and 30 more

Value

GeForce GT 645M
n.d.
Battlefield 3, Battlefield 4, Bioshock Infinite and 30 more

Noise and Power

GeForce GT 645M
5.3
TDP, Idle Power Consumption, Load Power Consumption and 2 more

4.8

Overall Score

GeForce GT 645M
4.8

Benchmarks Real world tests of the GeForce GT 645M

Bitcoin mining Data courtesy CompuBench

GeForce GT 645M
19.12 mHash/s
GeForce 840M
94.68 mHash/s

Face detection Data courtesy CompuBench

GeForce GT 645M
8.49 mPixels/s
GeForce 840M
22.54 mPixels/s
Radeon HD 7670M
2.47 mPixels/s

T-Rex (GFXBench 3.0) Data courtesy CompuBench

GeForce GT 645M
1,859.4
GeForce 840M
3,359.62
Radeon HD 7670M
1,803.68

Manhattan (GFXBench 3.0) Data courtesy CompuBench

GeForce GT 645M
2,708.22
GeForce 840M
3,715.08
Radeon HD 7670M
1,737.63

Fire Strike Factor Data courtesy FutureMark

GeForce GT 645M
14.91
GeForce 840M
12.59

Sky Diver Factor Data courtesy FutureMark

GeForce GT 645M
118.77
GeForce 840M
120.22

Bioshock Infinite

GeForce GT 645M
14.3
GeForce 840M
13.55

Crysis 3

GeForce GT 645M
7

Specifications Full list of technical specs

gpu

GPU brand Nvidia
GPU name GK107
Market Laptop
Clock speed 709 MHz
Is dual GPU No
Reference card None

raw performance

Shading units 384
Texture mapping units 32
Render output processors 16
Pixel rate 5.67 GPixel/s
Texture rate 22.69 GTexel/s
Floating-point performance 544.5 GFLOPS

memory

Memory clock speed 900 MHz
Effective memory clock speed 1,800 MHz
Memory bus 128 bit
Memory 2,048 MB
Memory type DDR3
Memory bandwidth 28.8 GB/s

noise and power

TDP 32W
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