R520 and NV11 A2 - video card comparison
R520
NV11 A2
Architecture
Ultra-Threaded SE
Celsius (1999−2005)
GPU code name
R520
NV11 A2
Market segment
Desktop
Desktop
Release date
-
-
Manufacturing process technology
90 nm
180 nm
Number of transistors
312 million
20 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