Radeon Instinct MI8 and Radeon RX 6600 XT - video card comparison

Radeon Instinct MI8

Radeon RX 6600 XT

Architecture

GCN 3.0 (2014−2017)

Navi / RDNA2 (2020−2022)

GPU code name

Fiji

Navi 23

Market segment

Desktop

Release date

December 2016

July 2021

Interface

PCIe 3.0 x16

PCIe 4.0 x8

Supplementary power connectors

1x 8-pin

Boost clock speed

2589 MHz

Core clock speed

1000 MHz

1968 MHz

Floating-point performance

8,192 gflops

Manufacturing process technology

28 nm

7 nm

Number of transistors

8,900 million

11,060 million

Pipelines / CUDA cores

4096

2048

Power consumption (TDP)

175 Watt

160 (TGP) Watt

Texture fill rate

256.0

331.4

Memory type

HBM

GDDR6

Maximum RAM amount

4 GB

8 GB

Memory bus width

4096 Bit

128 Bit

Memory clock speed

1000 MHz

16000 MHz

Memory bandwidth

512.0 GB/s

256.0 GB/s

Shared memory

Display Connectors

No outputs

1x HDMI, 2x DisplayPort

HDMI

DirectX

12 (12_0)

12.0 Ultimate (12_2)

OpenCL

2.0

2.1

OpenGL

4.6

Shader Model

6.3

6.5

Vulkan

1.2.131

1.2