Radeon RX 6900 and GeForce RTX 4090 Mobile - video card comparison

Radeon RX 6900

GeForce RTX 4090 Mobile

Architecture

RDNA 2.0 (2020−2022)

Ada Lovelace

GPU code name

Navi 21

GN21-X11

Market segment

Desktop

Laptop

Release date

October 2020

January 2023

Interface

PCIe 4.0 x16

Supplementary power connectors

2x 8-pin

Boost clock speed

2105 MHz

2040 MHz

Manufacturing process technology

7 nm

5 nm

Number of transistors

23,000 million

45,900 million

Pipelines / CUDA cores

4608

9728

Power consumption (TDP)

255 Watt

150 Watt (80 - 150 Watt TGP)

Texture fill rate

606.2

515.3

Memory type

GDDR6

Maximum RAM amount

16 GB

Memory bus width

256 Bit

Memory clock speed

16 GB/s

20000 MHz

Memory bandwidth

512.0 GB/s

576.0 GB/s

Shared memory

Display Connectors

1x HDMI, 2x DisplayPort, 1x USB Type-C

Portable Device Dependent

HDMI

DirectX

12 Ultimate (12_2)

CUDA

8.9

OpenCL

2.0

3.0

OpenGL

4.6

Shader Model

6.5

6.7

Vulkan

1.2

1.3