Xeon
Past and current logos
Developer	Intel
Manufacturer	Intel
Type	Microprocessors
Introduction	June 29, 1998 (announced) 1998 (launch)
Production	1998
ISA	x86-64
µarch	P6, NetBurst, Core, Penryn, Nehalem, Westmere, Sandy Bridge, Ivy Bridge, Haswell, Broadwell, Skylake
Word size	32 bit 4 octets 8 nibbles , 64 bit 8 octets 16 nibbles
Process	350 nm 0.35 μm 3.5e-4 mm , 250 nm 0.25 μm 2.5e-4 mm , 180 nm 0.18 μm 1.8e-4 mm , 65 nm 0.065 μm 6.5e-5 mm , 45 nm 0.045 μm 4.5e-5 mm , 32 nm 0.032 μm 3.2e-5 mm , 22 nm 0.022 μm 2.2e-5 mm , 14 nm 0.014 μm 1.4e-5 mm
Technology	CMOS
Clock	400 MHz-4000 MHz
Succession
←
Pentium Pro

Xeon (pronounced "Zee-On") is an extended family of high-performance x86 microprocessors developed by Intel for server environments and non-consumer workstations. Over the years Xeon has grown to focus on high-bandwidth, large-memory, and highly concurrent workloads. Xeon processors typically incorporate a large number of cores, large cache, and support for large amount of memory. Xeon offers models for both uniprocessor or multiprocessors.

Families

Xeon Processors

Legacy Xeon Processors

• 3000-Series
• 5000-Series
• 7000-Series

• D-Series
• E-Series
• L-Series

• W-Series
• X-Series

• E3-Series
• E3 v2-Series
• E3 v3-Series

• E3 v4-Series
• E3 v5-Series
• E3 v6-Series

E5-Series

• E5 v2-Series
• E5 v3-Series
• E5 v4-Series

E7-Series

• E7 v2-Series
• E7 v3-Series
• E7 v4-Series

Xeon Scalable Processors​

• 1st Generation
• 2nd Generation
• 3rd Generation

Xeon Timeline

Intro	Family	Process	µarch	Core Name	Core Count
1998	Pentium II Xeon	250 nm	P6	Drake	1
1999	Pentium III Xeon			Tanner	1
		180 nm		Cascades	1
2001	Xeon		NetBurst	Foster	1
2002		130 nm		Prestonia	1
2003				Gallatin	1
2004		90 nm		Nocona	1
2005				Irwindale	1
				Paxville	2
				Potomac	1
				Cranford	1
2006		65 nm		Dempsey	2
				Tulsa	2
			MPM	Sossaman	2
			Core	Woodcrest	2
				Conroe	2
				Clovertown	4
2007				Allendale	2
				Kentsfield	4
				Tigerton	2
		45 nm	Penryn	Wolfdale	2
				Harpertown	4
2008				Yorkfield	4
				Dunnington	4,6
2009			Nehalem	Lynnfield	4
				Bloomfield	2,4
				Gainestown	2,4
2010				Jasper Forest	1,2,4
				Beckton	4,6,8
		32 nm	Westmere	Clarkdale	2
				Gulftown	6
				Westmere EP	2,4,6
	Xeon E3 Xeon E5 Xeon E7			Westmere EX	6,8,10
2011			Sandy Bridge	Sandy Bridge	2,4
2012				Gladden	4
				Sandy Bridge EN	4,6,8
				Sandy Bridge EP	4,6,8
		22 nm	Ivy Bridge	Ivy Bridge	2,4
2013				Gladden	4
				Ivy Bridge EP	4,6,8,10,12
			Haswell	Haswell WS	2,4
2014			Ivy Bridge	Ivy Bridge EN	4,6,8,10
				Ivy Bridge EX	12,15
			Haswell	Haswell EP	4,6,8,10,12,14
2015				Haswell EN	4,6,8,10
				Haswell EX	8,10,12,14,16,18
		14 nm	Broadwell	Broadwell DE	4,6,8,12,16
				Broadwell H	4
			Skylake	Skylake DT	4
2016			Broadwell	Broadwell EP	4,6,8,10,12,14,16,18,20,22
				Broadwell EX	8,10,14,16,20,22,24
			Skylake	Skylake H	4
2017	Xeon Bronze Xeon Silver Xeon Gold Xeon Platinum		Skylake (Server)	Skylake SP	4,6,8,10,12,14,16,18,20,22,24,26,28
2018			Cascade Lake	Cascade Lake SP	4,6,8,10,12,14,16,18,20,22,24,26,28

Xeon Processors Family

Intel Xeon Processors Family (Server)

	1 or 2 Sockets UP/DP/3000/5000/E3/E5-1xxx, 2xxx/E7-2xxx/D/E/W series Xeon Bronze/Silver/Gold (non H)/Xeon Platinum (non H)/Max			4 or 8 Sockets MP/7000/E5-4xxx/E7-4xxx, 8xxx series Xeon Gold (H)/Xeon Platinum (H)
Fab node	Code named	# of Cores	Release date	Code named	# of Cores	Release date
P6 250 nm				Drake (Pentium II based)	1	Jun 1998
				Tanner	1	Mar 1999
180 nm	Cascades (256 KB L2 cache)	1	Oct 1999	Cascades (700/900 MHz models only)	1	May 2000
	Foster (Pentium 4 based)	1	May 2001	Foster MP (Pentium 4 based)	1	Mar 2002
130 nm	Prestonia	1	Feb 2002
	Gallatin DP	1	July 2003	Gallatin	1	Nov 2002
NetBurst 90 nm	Nocona (64-bit)	1	Jun 2004	Cranford (64-bit)	1	Mar 2005
	Irwindale (64-bit)	1	Feb 2005	Potomac	1	Mar 2005
	Paxville DP	2	Oct 2005	Paxville	2	Nov 2005
Core 65 nm (Core)	Dempsey (NetBurst)	2	May 2006	Tulsa	2	Aug 2006
	Sossaman (Mod Pentium M)	2	Mar 2006
	Woodcrest	2	Jun 2006
	Conroe	2	Oct 2006
	Clovertown	4	Nov 2006	Tigerton / Tigerton QC	2/4	Sep 2007
	Allendale	2	Jan 2007
	Kentsfield	4	Jan 2007
Penryn 45 nm Nehalem 45 nm	Harpertown	4	Nov 2007	Dunnington / Dunnington QC	4/6	Sep 2008
	Wolfdale DP	2	Nov 2007
	Wolfdale	2	Feb 2008
	Yorkfield	4	Mar 2008
	Bloomfield (W35xx)	4	Mar 2009
	Gainestown (55xx)	2/4	Mar 2009
	Lynnfield (34xx)	4	Sep 2009
	Beckton (65xx)	4/6/8	Mar 2010	Beckton (75xx)	4-8	Mar 2010
Westmere 32 nm	Clarkdale (L34xx)	2	Mar 2010
	Gulftown (W36xx)	6	Mar 2010
	Westmere EP (56xx)	2-6	Mar 2010
	Westmere EX (Xeon E7-2xxx)	6-10	Apr 2011	Westmere EX (Xeon E7-4xxx/8xxx)	6-10	Apr 2011
	Sandy Bridge DT/EN/EP	2-8	Mar 2012	Sandy Bridge EP (Xeon E5-46xx)	4-8	May 2012
22 nm	Ivy Bridge (E3/Xeon E5-1xxx/2xxx v2)	2-12	Sep 2013	Ivy Bridge EP (Xeon E5-46xx v2)	4-12	Mar 2014
	Ivy Bridge EX (Xeon E7-28xx v2)	12/15	Feb 2014	Ivy Bridge EX (Xeon E7-48xx/88xx v2)	6-12/15	Feb 2014
	Haswell • E/DT (Xeon E3/Xeon E5-1xxx)	2-18	Sep 2014	Haswell EP (Xeon E5-46xx v3)	6-18	Jun 2015
	Haswell • EP/EX (Xeon E5-2xxx v3)	2-18	Sep 2014	Haswell EX (Xeon E7-48xx/88xx v3)	4-18	May 2015
14 nm	Broadwell • EP/EX (Xeon E3/Xeon E5-1/2/4 v4)	4-22	Jun 2015
	Skylake H • Skylake S (Xeon E3-1xxx v5)	4	Oct 2015
	Skylake • SP/W (Xeon Bronze, Xeon Silver)	4-28	Jun 2017	Skylake SP (Xeon Gold, Xeon Platinum)	4-28	Jul 2017
	Cascade Lake • SP/W (Bronze/Silver/R/U)	4-28	Apr 2019	Cascade Lake SP (Gold (non-R/U)/Platinum)	4-28	Apr 2019
	Kaby Lake • H/S (Xeon E3-1xxx v6)	4	Mar 2017	Cooper Lake SP (Xeon 3)	8-28	Jun 2020
10 nm	Ice Lake • Ice Lake SP/W (Xeon 3)	8-40	Apr 2021
	Ice Lake • Ice Lake DE/DT (D)	2-20	Feb 2022
Intel 7	Sapphire Rapids SP/WS/HBM (Xeon 4)	6-56	Jan 2023	Sapphire Rapids SP (Xeon 4)	8-60	Jan 2023
	Emerald Rapids SP (Xeon 5)	8-64	Dec 2023
Intel 3 3 nm	Granite Rapids AP/SP (Xeon 6)	64-128	Oct 2024	Sierra Forest AP/SP (Xeon 6)	64-144	Oct 2024
	Diamond Rapids AP/SP	64-128	Dec 2025
Intel • Atom • Core • Roadmap • List of Intel Xeon Processors

Overview

Some shortcomings that make Xeon processors unsuitable for most consumer-grade desktop PCs include lower clock rates at the same price point (since servers run more tasks in parallel than desktops, core counts are more important than clock rates), and, usually, the lack of an integrated GPU. Processor models prior to Sapphire Rapids-WS lack support for overclocking (with the exception of Xeon W-3175X (Skylake-X)).

Despite such disadvantages, Xeon processors have always had popularity among some desktop users (video editors and other power users), mainly due to higher core count potential, and higher performance to price ratio vs. Core i7 in terms of total computing power of all cores. Since most Intel Xeon CPUs lack an integrated GPU, systems built with those processors require a discrete graphics card or a separate GPU if computer monitor output is desired.

Intel Xeon is a distinct product line from the similarly named Intel Xeon Phi. The first-generation Xeon Phi is a completely different type of device more comparable to a graphics card; it is designed for a PCI Express slot and is meant to be used as a multi-core coprocessor, like the Nvidia Tesla. In the second generation, Xeon Phi evolved into a main processor more similar to the Xeon. It conforms to the same socket as a Xeon processor and is x86-compatible; however, as compared to Xeon, the design point of the Xeon Phi emphasizes more cores with higher memory bandwidth.

See also

• Opteron
• EPYC