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NVIDIA GeForce GT 640M LE Image NVIDIA GK107 Image

Graphics Processor

GPU Name: GK107
GPU Variant: N13P-LP
Architecture: Kepler
Process Size: 28 nm
Transistors: 1,270 million
Die Size: 118 mm²

Graphics Card

Released: Mar 22nd, 2012
Production Status: Active
Bus Interface: PCIe 3.0 x16

Clock Speeds

GPU Clock: 500 MHz
Memory Clock: 900 MHz
1000 MHz (+11%)
1800 MHz effective
4000 MHz effective


Memory Size: 1024 MB
Memory Type: DDR3
Memory Bus: 128 bit
Bandwidth: 28.80 GB/s
64.0 GB/s

Render Config

Shading Units: 384
TMUs: 32
ROPs: 16
SMX Count: 2
Pixel Rate: 4.00 GPixel/s
Texture Rate: 16.00 GTexel/s
Floating-point performance: 384.0 GFLOPS

Board Design

TDP: 20 W

Graphics Features

DirectX: 11.2
OpenGL: 4.5
OpenCL: 1.2
CUDA: 3.0
Shader Model: 5.0


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Our review database contains 2 reviews of the GT 640M LE.

Card Notes

Memory Variant: 2048MB DDR3
Memory Variant: 1024MB GDDR5

Other retail boards based on this design

Name GPU Clock Memory Clock Other Changes
NVIDIA GeForce GT 640M LE 500 MHz 1000 MHz GDDR5
NVIDIA GeForce GT 640M LE 2 GB 500 MHz 900 MHz 2048 MB