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

Graphics Features 

 DirectX 8.0
 OpenGL 1.2 (1.5)
 Shader Model 1.3
 Vertex Shader 1.1
 Max VRAM size bumped to 128MB
 New memory controller with Z compression

Due to the lack of unified shaders you will not be able to run recent games at all (DirectX 10 mini).

Chips

GeForce 3 (3xxx) series 

 NV20, 57 million transistor

GeForce 4 (4xxx) series 

 NV2A (Xbox GPU), 57 million transistor
 NV25, 63 million transistor
 NV28, 36 million transistor
 NV17
 NV18

GPU list

GeForce 3 (3xxx) series

GeForce 4 (4xxx) series

See also 

 List of Nvidia graphics processing units
 Scalable Link Interface (SLI)
 Qualcomm Adreno

References

External links 

GPGPU
Nvidia Kelvie
Nvidia microarchitectures
Parallel computing
Graphics cards