Radeon R5 A255 and A2 - video card comparison

Radeon R5 A255

A2

Architecture

GCN 3.0 (2014−2017)

Ampere (2020−2022)

GPU code name

Topaz

GA107

Market segment

Desktop

Desktop

Release date

2014

November 2021

Interface

PCIe 3.0 x8

PCIe 4.0 x8

Supplementary power connectors

-

None

Boost clock speed

940 MHz

1770 MHz

Core clock speed

925 MHz

-

Manufacturing process technology

28 nm

8 nm

Number of transistors

1,550 million

-

Pipelines / CUDA cores

384

1280

Power consumption (TDP)

-

60 Watt

Texture fill rate

22.56

70.80

Memory type

GDDR5

GDDR6

Maximum RAM amount

1 GB

16 GB

Memory bus width

128 Bit

128 Bit

Memory clock speed

4 GB/s

12.5 GB/s

Memory bandwidth

64 GB/s

200.1 GB/s

Display Connectors

Portable Device Dependent

No outputs

DirectX

12 (12_0)

12 Ultimate (12_2)

CUDA

-

8.6

OpenCL

2.1

3.0

OpenGL

4.6

4.6

Shader Model

6.5

6.6

Vulkan

1.2.170

1.2