GeForce GT 640M and GeForce RTX 4090 Mobile - video card comparison

GeForce GT 640M

GeForce RTX 4090 Mobile

Architecture

Kepler (2012−2018)

Ada Lovelace

GPU code name

N13P-GS

GN21-X11

Market segment

Laptop

Release date

March 2012

January 2023

Bus support

PCI Express 2.0, PCI Express 3.0

Interface

PCIe 3.0 x16

PCIe 4.0 x16

Boost clock speed

645 MHz

2040 MHz

Core clock speed

Up to 625 MHz

CUDA cores

384

Floating-point performance

480.0 gflops

Manufacturing process technology

28 nm

5 nm

Number of transistors

1,270 million

45,900 million

Pipelines / CUDA cores

384

9728

Power consumption (TDP)

32 Watt

150 Watt (80 - 150 Watt TGP)

Texture fill rate

Up to 20.0 billion/sec

515.3

Memory type

DDR3\GDDR5

GDDR6

Maximum RAM amount

2 GB

16 GB

Memory bus width

128bit

256 Bit

Memory clock speed

1800 - 4000 MHz

20000 MHz

Memory bandwidth

Up to 64.0 GB/s

576.0 GB/s

Shared memory

Display Connectors

No outputs

Portable Device Dependent

HDMI

HDCP

Maximum VGA resolution

Up to 2048x1536

DirectX

12 API

12 Ultimate (12_2)

CUDA

8.9

OpenCL

1.1

3.0

OpenGL

4.5

4.6

Shader Model

5.1

6.7

Vulkan

1.1.126

1.3

3D Blu-Ray

Optimus