NVIDIA GeForce 940MX vs NVIDIA GeForce GT 640M

VS

NVIDIA GeForce 940MX

NVIDIA GeForce GT 640M

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

Main Differences

NVIDIA GeForce 940MX 's Advantages

Released 3 years and 10 months late

Boost Clock1242MHz

Lower TDP (23W vs 32W)

NVIDIA GeForce GT 640M 's Advantages

Larger VRAM bandwidth (28.80GB/s vs 16.02GB/s)

Score

Benchmark

FP32 (float)

GeForce 940MX +98%

0.954 TFLOPS

GeForce GT 640M

0.48 TFLOPS

GeForce 940MX

VS

GeForce GT 640M

Graphics Card

Jan 2016

Release Date

Mar 2012

GeForce 900M

Generation

GeForce 600M

Mobile

Type

Mobile

PCIe 3.0 x8

Bus Interface

PCIe 3.0 x16

Clock Speeds

1004 MHz

Base Clock

-

1242 MHz

Boost Clock

-

1001 MHz

Memory Clock

900 MHz

Memory

2GB

Memory Size

2GB

DDR3

Memory Type

DDR3

64bit

Memory Bus

128bit

16.02GB/s

Bandwidth

28.80GB/s

Render Config

-

384

Shading Units

384

24

TMUs

32

8

ROPs

16

-

64 KB (per SMM)

L1 Cache

16 KB (per SMX)

1024 KB

L2 Cache

256 KB

-

Theoretical Performance

9.936 GPixel/s

Pixel Rate

5.000 GPixel/s

29.81 GTexel/s

Texture Rate

20.00 GTexel/s

-

953.9 GFLOPS

FP32 (float)

480.0 GFLOPS

29.81 GFLOPS

FP64 (double)

20.00 GFLOPS

Board Design

23W

TDP

32W

-

No outputs

Outputs

No outputs

None

Power Connectors

-

Graphics Processor

GM108

GPU Name

GK107

N16S-GTR-S

GPU Variant

N13P-GS

Maxwell

Architecture

Kepler

TSMC

Foundry

TSMC

28 nm

Process Size

28 nm

Unknown

Transistors

1.27 billion

Unknown

Die Size

118 mm²

Graphics Features

12 (11_0)

DirectX

12 (11_0)

4.6

OpenGL

4.6

3.0

OpenCL

3.0

1.3

Vulkan

1.1

5.0

CUDA

3.0

5.1

Shader Model

5.1

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