Celsius (microarchitecture) explained

Nvidia Celsius
Created:	1999
D3dversion:	7.0
Predecessor:	Fahrenheit
Successor:	Kelvin
Process:	220 nm, 180nm, 150 nm
Openglversion:	1.2 (1.5)
Architecture:	Celsius
Date:	1999-2005
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.

Graphics features

• DirectX 7.0
• OpenGL 1.2 (1.5)^{[2] [3]}
• Max VRAM size bumped to 128MB

Chips

• NV10, 17 million transistor^[4]

• NV11, 20 million transistor^[5]
• NV15, 25 million transistor^[6]
• NV17, 29 million transistor^[7]
• NV18, 29 million transistor
• Crush11, 20 million transistor^[8]
• Crush17, 29 million transistor^[9]

GPU list

Model	Launch	Code name	Fab (nm)	Bus interface	Core clock (MHz)	Memory clock (MHz)	Core config^1	Fillrate				Memory				Processing power (GFLOPS)
								MOperations/s	MPixels/s	MTexels/s	MVertices/s	Size (MB)	Bandwidth (GB/s)	Bus type	Bus width (bit)	Single precision
GeForce 256 SDR	11 October 1999	NV10	TSMC 220 nm	AGP 4×PCI	120	166	4:4:4	480	480	480	0	3264	2.656	SDR	128	50
GeForce 256 DDR	13 December 1999					150							4.8	DDR

Model	Launch	Code name	Fab (nm)	Bus interface	Core clock (MHz)	Memory clock (MHz)	Core config^1	Fillrate				Memory
								MOperations/s	MPixels/s	MTexels/s	MVertices/s	Size (MB)	Bandwidth (GB/s)	Bus type	Bus width (bit)
GeForce2 MX IGP + nForce 220/420	4 June 2001	NV1A (IGP) / NV11 (MX)	TSMC 180 nm	FSB	175	133	2:4:2	350	350	700	0	Up to 32 system RAM	2.1284.256	DDR	64128
GeForce2 MX200	3 March 2001			AGP 4×PCI		166						3264	1.328	SDR	64
GeForce2 MX	28 June 2000												2.656		128
GeForce2 MX400	3 March 2001				200	166,200 (SDR)166 (DDR)		400	400	800			2.656, 3.200	SDRDDR	128 (SDR)64 (DDR)
GeForce2 GTS	26 April 2000	NV15		AGP 4×		166	4:8:4	800	800	1600			5.312	DDR	128
GeForce2 Pro	5 December 2000					200							6.4
GeForce2 Ti	1 October 2001		TSMC 150 nm		250			1000	1000	2000
GeForce2 Ultra	14 August 2000	NV16	TSMC 180 nm			230						64	7.36
Model	Launch	Code name	Fab (nm)	Bus interface	Core clock (MHz)	Memory clock (MHz)	Core config^1	MOperations/s	MPixels/s	MTexels/s	MVertices/s	Size (MB)	Bandwidth (GB/s)	Bus type	Bus width (bit)
								Fillrate				Memory

See also

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

Notes and References

1. Web site: CodeNames. 2021-02-15. nouveau.freedesktop.org.
2. Web site: GPU chips — envytools git documentation. 2021-02-15. envytools.readthedocs.io.
3. Web site: TechPowerUp. 2021-02-15. TechPowerUp. en.
4. Web site: NVIDIA GeForce 256 DDR Specs. 2021-02-15. TechPowerUp. en.
5. Web site: NVIDIA NV11 GPU Specs. 2021-02-15. TechPowerUp. en.
6. Web site: NVIDIA NV15 GPU Specs. 2021-02-15. TechPowerUp. en.
7. Web site: NVIDIA NV17 GPU Specs. 2021-02-15. TechPowerUp. en.
8. Web site: NVIDIA GeForce2 MX + nForce 220 Specs. 2021-02-15. TechPowerUp. en.
9. Web site: NVIDIA GeForce4 MX + nForce2 Specs. 2021-02-15. TechPowerUp. en.