List of Intel Xeon processors (P6-based)

Main article: List of Intel Xeon processors

Pentium II Xeon

"Drake" (250 nm)

• Based on P6 microarchitecture
• All models support: MMX
• All models support quad-processor configurations
• Steppings: B0, B1

Model number	Frequency	L2 cache	FSB	Mult.	Voltage	TDP	Socket	Release date	Release price (USD)
Pentium II Xeon 400	400 MHz	512 KB	100 MT/s	4×	2.0 V	30.8 W	Slot 2	June 29, 1998	$1,124 [1]
Pentium II Xeon 400	400 MHz	1 MB	100 MT/s	4×	2.0 V	38.1 W	Slot 2	June 29, 1998	$2,836 [1]
Pentium II Xeon 450	450 MHz	512 KB	100 MT/s	4.5×	2.0 V	34.5 W	Slot 2	October 6, 1998	$824 [2]
Pentium II Xeon 450	450 MHz	1 MB	100 MT/s	4.5×	2.0 V	42.8 W	Slot 2	January 5, 1999	$1,980 [3]
Pentium II Xeon 450	450 MHz	2 MB	100 MT/s	4.5×	2.0 V	46.7 W	Slot 2	January 5, 1999	$3,692 [3]

Pentium III Xeon

"Tanner" (250 nm)

• Based on P6 microarchitecture
• All models support: MMX, SSE
• All models support quad-processor configurations
• Die size: 123 mm²
• Steppings: B0, C0

Model number	Frequency	L2 cache	FSB	Mult.	Voltage	TDP	Socket	Release date	Release price (USD)
Pentium III Xeon 500	500 MHz	512 KB	100 MT/s	5×	2.0 V	36 W	Slot 2	March 17, 1999	$931 [4]
Pentium III Xeon 500	500 MHz	1 MB	100 MT/s	5×	2.0 V	44 W	Slot 2	March 17, 1999	$1,980 [4]
Pentium III Xeon 500	500 MHz	2 MB	100 MT/s	5×	2.0 V	36.2 W	Slot 2	March 17, 1999	$3,692 [4]
Pentium III Xeon 550	550 MHz	512 KB	100 MT/s	5.5×	2.0 V	34 W	Slot 2	August 23, 1999	$931 [5]
Pentium III Xeon 550	550 MHz	1 MB	100 MT/s	5.5×	2.0 V	34 W	Slot 2	August 23, 1999	$1,980 [5]
Pentium III Xeon 550	550 MHz	2 MB	100 MT/s	5.5×	2.0 V	34 W	Slot 2	August 23, 1999	$3,692 [5]

"Cascades" (180 nm)

• Based on P6 microarchitecture
• All models support: MMX, SSE
• Only 700 MHz and 900 MHz models are capable of quad processor configurations
• All models shipped in either 2.8 V, 5 V, or 12 V variants
• Steppings: A0, A1, A2, B0, C0

Model number	Frequency	L2 cache	FSB	Mult.	Voltage	TDP	Socket	Release date	Release price (USD)
Pentium III Xeon 600	600 MHz	256 KB	133 MT/s	4.5×	2.8–12 V	19.2 W	Slot 2	October 1999	$505 [6]
Pentium III Xeon 667	667 MHz	256 KB	133 MT/s	5×	2.8–12 V	21.3 W	Slot 2	October 25, 1999	$655 [6]
Pentium III Xeon 700	700 MHz	1 MB	100 MT/s	7×	2.8–12 V	29.6 W	Slot 2	May 22, 2000	$1,177 [7]
Pentium III Xeon 700	700 MHz	2 MB	100 MT/s	7×	2.8–12 V	29.6 W	Slot 2	May 22, 2000	$1,980 [7]
Pentium III Xeon 733	733 MHz	256 KB	133 MT/s	5.5×	2.8–12 V	23.3 W	Slot 2	October 25, 1999	$826 [6]
Pentium III Xeon 800	800 MHz	256 KB	133 MT/s	6×	2.8–12 V	25.4 W	Slot 2	January 12, 2000	$901 [8]
Pentium III Xeon 866	867 MHz	256 KB	133 MT/s	6.5×	2.8–12 V	29.6 W	Slot 2	April 10, 2000	$826 [9]
Pentium III Xeon 900	900 MHz	2 MB	100 MT/s	9×	2.8–12 V	39.3 W	Slot 2	March 21, 2001 [a]	$3,692 [13]
Pentium III Xeon 933	933 MHz	256 KB	133 MT/s	7×	2.8–12 V	29.6 W	Slot 2	May 24, 2000	$794 [14]
Pentium III Xeon 1.00	1000 MHz	256 KB	133 MT/s	7.5×	2.8–12 V	30.8 W	Slot 2	August 22, 2000	$719 [15]

Notes

1. Withdrawn in July due to a bug, ^[10] fixed by late August, ^[11] shipping again in September. ^[12]

References

1. "Intel Introduces New Pentium® II Xeon™ Processor to Achieve Unmatched Performance Levels for Servers and Workstations" (Press release). Intel Corporation. June 29, 1998. Retrieved May 5, 2023.
2. "Intel Announces Fastest Pentium® II Xeon™ Processor" (Press release). Intel Corporation. October 6, 1998. Retrieved May 5, 2023.
3. "Intel Announces Pentium® II Xeon™ Processor with Larger Cache, Higher Frequency for Industry-Leading Performance" (Press release). Intel Corporation. January 5, 1999. Retrieved May 5, 2023.
4. "Pentium® III Xeon™ Processor Launch" (Press release). Intel Corporation. March 17, 1999. Retrieved May 5, 2023.
5. "Intel Announces Latest Pentium® III Xeon™ Processors Offering Higher Levels Of Performance, Headroom And Scalability" (Press release). Intel Corporation. August 23, 1999. Retrieved May 5, 2023.
6. "Intel Introduces 15 New Pentium® III And Pentium III Xeon™ Processors Built On Advanced 0.18-Micron Technology" (Press release). Intel Corporation. October 25, 1999. Retrieved May 5, 2023.
7. "Intel Introduces New Processors For High-End Servers" (Press release). Intel Corporation. May 22, 2000. Retrieved May 5, 2023.
8. "Intel Introduces New High Performance Processor For Servers And Workstations" (Press release). Intel Corporation. January 12, 2000. Retrieved May 5, 2023.
9. "Intel Boosts Workstation Performance With New Processors" (Press release). Intel Corporation. April 10, 2000. Retrieved May 5, 2023.
10. Neel, Dan (12 July 2001). "Intel stops shipments of 900MHz Xeon". CNN .
11. "Intel Pentium III Xeon 900MHZ / 2MB TPR issue - Servers". IBM Support. Retrieved 29 April 2022.
12. "Form 10-K for the fiscal year ended December 29, 2001". Intel.
13. "Intel Ships 900 MHz Xeons". rcpmag.com.
14. "Intel Introduces Pentium® III Processor At 933 MHz" (Press release). Intel Corporation. May 24, 2000. Retrieved May 5, 2023.
15. "Intel Ships Industry's First Gigahertz Server And Workstation Processors" (Press release). Intel Corporation. May 24, 2000. Retrieved May 5, 2023.