NVIDIA GeForce 940M vs NVIDIA GeForce GT 640M LE

VS

NVIDIA GeForce 940M

NVIDIA GeForce GT 640M LE

We compared two Mobile platform GPUs: 2GB VRAM GeForce 940M and 2GB VRAM GeForce GT 640M LE to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce 940M 's Advantages

Released 2 years and 10 months late

Boost Clock1098MHz

416 additional rendering cores

NVIDIA GeForce GT 640M LE 's Advantages

Larger VRAM bandwidth (50.24GB/s vs 14.40GB/s)

Lower TDP (32W vs 75W)

Score

Benchmark

FP32 (float)

GeForce 940M +288%

1.124 TFLOPS

GeForce GT 640M LE

0.289 TFLOPS

GeForce 940M

VS

GeForce GT 640M LE

Graphics Card

Mar 2015

Release Date

May 2012

GeForce 900M

Generation

GeForce 600M

Mobile

Type

Mobile

MXM-B (3.0)

Bus Interface

PCIe 2.0 x16

Clock Speeds

1020 MHz

Base Clock

-

1098 MHz

Boost Clock

-

900 MHz

Memory Clock

785 MHz

Memory

2GB

Memory Size

2GB

DDR3

Memory Type

GDDR5

64bit

Memory Bus

128bit

14.40GB/s

Bandwidth

50.24GB/s

Render Config

-

SM Count

2

512

Shading Units

96

32

TMUs

16

ROPs

4

-

64 KB (per SMM)

L1 Cache

64 KB (per SM)

2 MB

L2 Cache

256 KB

-

Theoretical Performance

17.57 GPixel/s

Pixel Rate

3.012 GPixel/s

35.14 GTexel/s

Texture Rate

12.05 GTexel/s

-

1124 GFLOPS

FP32 (float)

289.0 GFLOPS

35.14 GFLOPS

FP64 (double)

24.08 GFLOPS

Board Design

75W

TDP

32W

-

No outputs

Outputs

No outputs

-

Graphics Processor

GM107

GPU Name

GF108

N16S-GT1-KB-B

GPU Variant

-

Maxwell

Architecture

Fermi

TSMC

Foundry

TSMC

28 nm

Process Size

40 nm

1.87 billion

Transistors

0.585 billion

148 mm²

Die Size

116 mm²

Graphics Features

12 (11_0)

DirectX

12 (11_0)

4.6

OpenGL

4.6

3.0

OpenCL

1.1

1.3

Vulkan

N/A

5.0

CUDA

2.1

5.1

Shader Model

5.1

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