| Release date | 1999-2005 1999 |
|---|---|
| Architecture | Celsius |
| Fabrication process | 220 nm, 180nm, 150 nm |
| API support | |
| DirectX | 7.0 |
| OpenGL | 1.2 (1.5) |
| History | |
| Predecessor | Fahrenheit |
| Successor | Kelvin |
| Support status | |
| Unsupported | |
Celsius is the codename for a GPU microarchitecture developed by Nvidia, and released in 1999, as the successor to Fahrenheit (NV4, NV3...)[1] microarchitecture. It was named with reference to Celsius and used with the GeForce 256 and GeForce 2 series.