Radeon R5 A255 and Radeon Instinct MI250 - video card comparison

Radeon R5 A255

Radeon Instinct MI250

Architecture

GCN 3.0 (2014−2017)

CDNA 2.0 (2021)

GPU code name

Topaz

Aldebaran

Market segment

Desktop

Release date

2014

November 2021

Interface

PCIe 3.0 x8

PCIe 4.0 x16

Supplementary power connectors

2x 8-pin

Boost clock speed

940 MHz

1700 MHz

Core clock speed

925 MHz

Manufacturing process technology

28 nm

6 nm

Number of transistors

1,550 million

58,200 million

Pipelines / CUDA cores

384

13312

Power consumption (TDP)

500 Watt

Texture fill rate

22.56

1,414

Memory type

GDDR5

HBM2e

Maximum RAM amount

1 GB

128 GB

Memory bus width

128 Bit

8192 Bit

Memory clock speed

4 GB/s

3.2 GB/s

Memory bandwidth

64 GB/s

3,277 GB/s

Display Connectors

Portable Device Dependent

No outputs

DirectX

12 (12_0)

N/A

OpenCL

2.1

3.0

OpenGL

4.6

N/A

Shader Model

6.5

N/A

Vulkan

1.2.170

N/A