NVIDIA GeForce 945M vs NVIDIA GeForce GT 640M

VS

NVIDIA GeForce 945M NVIDIA GeForce GT 640M

We compared two Mobile platform GPUs: 1024MB VRAM GeForce 945M 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 945M 's Advantages

Released 4 years and 1 months late

Boost Clock1189MHz

Lower TDP (23W vs 32W)

NVIDIA GeForce GT 640M 's Advantages

More VRAM (2GB vs 1GB)

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

Score

Benchmark

FP32 (float)

GeForce 945M +90%

0.913 TFLOPS

GeForce GT 640M

0.48 TFLOPS

GeForce 945M

VS

GeForce GT 640M

Graphics Card

Apr 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

1006 MHz

Base Clock

-

1189 MHz

Boost Clock

-

1001 MHz

Memory Clock

900 MHz

Memory

1024MB

Memory Size

2GB

DDR3

Memory Type

DDR3

64bit

Memory Bus

128bit

16.02GB/s

Bandwidth

28.80GB/s

Render Config

-

SM Count

-

Compute Units

-

384

Shading Units

384

24

TMUs

32

8

ROPs

16

-

Tensor Cores

-

RT Cores

-

64 KB (per SMM)

L1 Cache

16 KB (per SMX)

1024 KB

L2 Cache

256 KB

Theoretical Performance

9.512 GPixel/s

Pixel Rate

5.000 GPixel/s

28.54 GTexel/s

Texture Rate

20.00 GTexel/s

-

FP16 (half)

-

913.2 GFLOPS

FP32 (float)

480.0 GFLOPS

28.54 GFLOPS

FP64 (double)

20.00 GFLOPS

Graphics Processor

GM108

GPU Name

GK107

-

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

Board Design

23W

TDP

32W

-

Suggested PSU

-

No outputs

Outputs

No outputs

None

Power Connectors

-

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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