Radeon R9 280X2 and Radeon RX 6600M - video card comparison

Radeon R9 280X2

Radeon RX 6600M

Architecture

GCN 1.0 (2012−2020)

RDNA 2 (2020−2022)

GPU code name

Tahiti

R21M-E65-70

Market segment

Desktop

Laptop

Release date

September 2020

Interface

PCIe 3.0 x16

PCIe 4.0 x8

Supplementary power connectors

3x 8-pin

None

Boost clock speed

1000 MHz

2177 MHz

Core clock speed

2068 MHz

Manufacturing process technology

28 nm

7 nm

Number of transistors

4,313 million

11,060 million

Pipelines / CUDA cores

2048

1792

Power consumption (TDP)

375 Watt

100 Watt (50 - 100 Watt TGP)

Texture fill rate

128.0

235.8

Memory type

GDDR5

GDDR6

Maximum RAM amount

3 GB

8 GB

Memory bus width

384 Bit

128 Bit

Memory clock speed

6 GB/s

14000 MHz

Memory bandwidth

288.0 GB/s

256.0 GB/s

Shared memory

Display Connectors

6x mini-DisplayPort 1.2

No outputs

DirectX

12 (11_1)

12 Ultimate (12_2)

OpenCL

2.1 (1.2)

2.1

OpenGL

4.6

Shader Model

6.5 (5.1)

6.5

Vulkan

1.2.170

1.2