Tahiti and R420 - video card comparison

Tahiti

R420

Architecture

GCN 1.0 (2012−2020)

R400 (2004−2008)

GPU code name

Tahiti

R420

Market segment

Desktop

Desktop

Release date

-

-

Manufacturing process technology

28 nm

130 nm

Number of transistors

4,313 million

160 million

Pipelines / CUDA cores

2048

-

DirectX

12 (11_1)

9.0b (9_2)

OpenCL

2.1 (1.2)

N/A

OpenGL

4.6

2.1

Shader Model

6.5 (5.1)

-

Vulkan

1.2.170

N/A