Kelvin (microarchitecture)

Kelvin is the codename for a GPU microarchitecture developed by Nvidia, and released in 2001, as the successor to the Celsius microarchitecture. It was named with reference to William Thomson, 1st Baron Kelvin and used with the GeForce 3 and 4 series.

• DirectX 8.0 (8.1 in the original Xbox)
• OpenGL 1.2 (1.5; 1.4 in the original Xbox)
• Shader Model 1.3
• Vertex Shader 1.1
• Max VRAM size bumped to 128MB
• New memory controller with Z compression

• NV20, 57 million transistor
• NV2A (Xbox GPU), 57 million transistor

• Crush11, 20 million transistor
• NV17, 29 million transistor
• NV18, 29 million transistor
• NV25, 63 million transistor
• NV28, 36 million transistor
• NV2A (Xbox GPU), 57 million transistor

• List of eponyms of Nvidia GPU microarchitectures
• List of Nvidia graphics processing units
• Qualcomm Adreno
• Scalable Link Interface (SLI)