Radeon RX 6900 and GeForce RTX 4080 Mobile - video card comparison

Radeon RX 6900

GeForce RTX 4080 Mobile

Architecture

RDNA 2.0 (2020−2022)

Ada Lovelace

GPU code name

Navi 21

GN21-X9

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

2280 MHz

Core clock speed

1860 MHz

Manufacturing process technology

7 nm

5 nm

Number of transistors

23,000 million

35,800 million

Pipelines / CUDA cores

4608

7424

Power consumption (TDP)

255 Watt

150 Watt (60 - 150 Watt TGP)

Texture fill rate

606.2

386.3

Memory type

GDDR6

GDDR6X

Maximum RAM amount

16 GB

12 GB

Memory bus width

256 Bit

192 Bit

Memory clock speed

16 GB/s

20000 MHz

Memory bandwidth

512.0 GB/s

432.0 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