R520 and NV15 A5 - video card comparison

R520

NV15 A5

Architecture

Ultra-Threaded SE

Celsius (1999−2005)

GPU code name

R520

NV15 A5

Market segment

Desktop

Desktop

Release date

-

-

Manufacturing process technology

90 nm

150 nm

Number of transistors

312 million

25 million

DirectX

9.0c (9_3)

7.0

OpenCL

N/A

N/A

OpenGL

2.1

1.2

Shader Model

3.0

-

Vulkan

N/A

N/A