R420 and NV4 - video card comparison

R420

NV4

Architecture

R400 (2004−2008)

Fahrenheit (1998−2000)

GPU code name

R420

NV4

Market segment

Desktop

Desktop

Release date

-

-

Manufacturing process technology

130 nm

350 nm

Number of transistors

160 million

7 million

DirectX

9.0b (9_2)

5.0

OpenCL

N/A

N/A

OpenGL

2.1

1.2

Vulkan

N/A

N/A