R420 and NV38 - video card comparison

R420

NV38

Architecture

R400 (2004−2008)

Rankine (2003−2005)

GPU code name

R420

NV38

Market segment

Desktop

Desktop

Release date

-

-

Manufacturing process technology

130 nm

130 nm

Number of transistors

160 million

135 million

DirectX

9.0b (9_2)

9.0a

OpenCL

N/A

N/A

OpenGL

2.1

1.5 (full) VulkanN/AN/A