Fahrenheit (microarchitecture)

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This article is about the GPU microarchitecture. For GPGPU cards, see .

Nvidia Fahrenheit
Release date1998-1999 1998
ArchitectureFahrenheit
Fabrication process350 nm, 250nm
API support
Direct3D5.0 and 6.0
OpenGL1.0 and 1.2
VulkanNone
History
SuccessorCelsius

Fahrenheit is the codename for a GPU microarchitecture developed by Nvidia, and released in 1998, as the successor to STG-2000, Riva 128 (NV1, NV2, NV3...) microarchitecture. It was named with reference to Fahrenheit[1] and used with STG-2000, Riva 128.

Graphics features[]

  • DirectX 5.0 and 6.0[2][3]
  • OpenGL 1.2
  • Vertex shader: None
  • Pixel shader: ?
  • Z-buffer 24 bits[4]
  • Up to 2048*2048 pixels texture size[4]
  • 32-bit (truecolor) pixel format (add since Riva TNT)[4]
  • AGP 4X support[4]
  • Bump Mapping in single cycle[4]
  • Up to 32MB video memory

GPU list[]

Model Launch Code name Fab (nm) Transistors (million) Die size (mm²) Bus interface Core clock (MHz) Memory clock (MHz) Core config1 Fillrate Memory API support
MOperations/s MPixels/s MTexels/s MVertices/s Size (MB) Bandwidth (GB/s) Bus type Bus width (bit) Direct3D OpenGL
Riva TNT June 15, 1998 NV4 TSMC 350 nm 7 90 AGP 2×, PCI 90 110 2:2:2 180 180 180 0 8

16

1.76 SDR 128 6.0 1.2
Vanta March 22, 1999 NV6 TSMC 250 nm ? AGP 4×, PCI 100 125 200 200 200 16 1 64
Vanta LT March 2000 AGP 2× 80 100 160 160 160 8

16

0.8
Riva TNT2 M64 October 1999 AGP 4×, PCI 125 150 250 250 250 8

16 32

1.2
Riva TNT2 March 15, 1999 NV5 15 90 16

32

2.4 128
Riva TNT2 Pro October 12, 1999 TSMC 220 nm 143 166 286 286 286 16

32

2.656
Riva TNT2 Ultra March 15, 1999 TSMC 250 nm 150 183 300 300 300 16

32

2.928
Model Launch Code name Fab (nm) Transistors (million) Die size (mm²) Bus interface Core clock (MHz) Memory clock (MHz) Core config1 MOperations/s MPixels/s MTexels/s MVertices/s Size (MB) Bandwidth (GB/s) Bus type Bus width (bit) Direct3D OpenGL
Fillrate Memory API support

See also[]

References[]

  1. ^ "TechPowerUp". TechPowerUp. Retrieved 21 February 2021.
  2. ^ "NVIDIA Riva TNT Specs". TechPowerUp. Retrieved 21 February 2021.
  3. ^ "NVIDIA Riva TNT2 Ultra Specs". TechPowerUp. Retrieved 21 February 2021.
  4. ^ a b c d e "NVIDIA Riva TNT 2 (Preview) - HardWare.fr". www.hardware.fr. Retrieved 21 February 2021.
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