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

GeForce GT 640

GeForce RTX 4090 Mobile

Architecture

Kepler (2012−2018)

Ada Lovelace

GPU code name

GK107

GN21-X11

Market segment

Desktop

Laptop

Release date

June 2012

January 2023

Interface

PCIe 3.0 x16

PCIe 4.0 x16

Supplementary power connectors

None

Boost clock speed

2040 MHz

Core clock speed

902 MHz

Floating-point performance

692.7 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)

65 Watt

150 Watt (80 - 150 Watt TGP)

Texture fill rate

28.86

515.3

Memory type

DDR3

GDDR6

Maximum RAM amount

2 GB

16 GB

Memory bus width

128 Bit

256 Bit

Memory clock speed

1782 MHz

20000 MHz

Memory bandwidth

28.51 GB/s

576.0 GB/s

Shared memory

Display Connectors

1x DVI, 1x HDMI, 1x DisplayPort

Portable Device Dependent

HDMI

DirectX

12 (11_0)

12 Ultimate (12_2)

CUDA

3.0

8.9

OpenCL

1.2

3.0

OpenGL

4.6

Shader Model

5.1

6.7

Vulkan

1.1.126

1.3