NVIDIA GeForce GT 645M vs NVIDIA GeForce 940MX

VS

NVIDIA GeForce GT 645M NVIDIA GeForce 940MX

We compared two Mobile platform GPUs: 2GB VRAM GeForce GT 645M and 2GB VRAM GeForce 940MX to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce GT 645M 's Advantages

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

NVIDIA GeForce 940MX 's Advantages

Released 3 years and 3 months late

Boost Clock1242MHz

Lower TDP (23W vs 32W)

Score

Benchmark

FP32 (float)

GeForce GT 645M

0.544 TFLOPS

GeForce 940MX +75%

0.954 TFLOPS

GeForce GT 645M

VS

GeForce 940MX

Graphics Card

Oct 2012

Release Date

Jan 2016

GeForce 600M

Generation

GeForce 900M

Mobile

Type

Mobile

PCIe 3.0 x16

Bus Interface

PCIe 3.0 x8

Clock Speeds

-

Base Clock

1004 MHz

-

Boost Clock

1242 MHz

900 MHz

Memory Clock

1001 MHz

Memory

2GB

Memory Size

2GB

DDR3

Memory Type

DDR3

128bit

Memory Bus

64bit

28.80GB/s

Bandwidth

16.02GB/s

Render Config

-

SM Count

-

Compute Units

-

384

Shading Units

384

32

TMUs

24

16

ROPs

8

-

Tensor Cores

-

RT Cores

-

16 KB (per SMX)

L1 Cache

64 KB (per SMM)

256 KB

L2 Cache

1024 KB

Theoretical Performance

5.672 GPixel/s

Pixel Rate

9.936 GPixel/s

22.69 GTexel/s

Texture Rate

29.81 GTexel/s

-

FP16 (half)

-

544.5 GFLOPS

FP32 (float)

953.9 GFLOPS

22.69 GFLOPS

FP64 (double)

29.81 GFLOPS

Graphics Processor

GK107

GPU Name

GM108

N13P-GS

GPU Variant

N16S-GTR-S

Kepler

Architecture

Maxwell

TSMC

Foundry

TSMC

28 nm

Process Size

28 nm

1.27 billion

Transistors

Unknown

118 mm²

Die Size

Unknown

Board Design

32W

TDP

23W

-

Suggested PSU

-

No outputs

Outputs

No outputs

-

Power Connectors

None

Graphics Features

12 (11_0)

DirectX

12 (11_0)

4.6

OpenGL

4.6

3.0

OpenCL

3.0

1.1

Vulkan

1.3

3.0

CUDA

5.0

5.1

Shader Model

5.1

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