Apple has launched ten Xserves.
PowerPC
G4

Various
- Release Date: 14 May 2002
- Tech Specs:
Software
- First Release: Mac OS X 10.1 Server (10.1.5)
- Last Release: Mac OS X Leopard Server (10.5.8)
Identifiers
- Model Identifiers: RackMac1,1
G4 (Slot Load)

Various
- Release Date: 10 February 2003
- Tech Specs:
Software
- First Release: Mac OS X 10.2 Server (10.2.4)
- Last Release: Mac OS X Leopard Server (10.5.8)
Identifiers
- Model Identifiers: RackMac1,2
G4 Cluster Node

Various
- Release Date: 1 March 2003
- Tech Specs:
Software
- First Release: Mac OS X 10.2 Server (10.2.4)
- Last Release: Mac OS X Leopard Server (10.5.8)
Identifiers
- Model Identifiers: RackMac1,2
G5/G5 Cluster Node (2004)


Various
- Release Date: 6 January 2004
- Tech Specs:
Software
- First Release: Mac OS X Panther Server (10.3)
- Last Release: Mac OS X Leopard Server (10.5.8)
Identifiers
- Model Identifiers: RackMac3,1
G5/G5 Cluster Node (2005)
Various
- Release Date: 4 January 2005
- Tech Specs:
Software
- First Release: Mac OS X Panther Server (10.3)
- Last Release: Mac OS X Leopard Server (10.5.8)
Identifiers
- Model Identifiers: RackMac3,1
Intel

Xserve (Late 2006)
Various
- Release Date: 7 August 2006
- Tech Specs:
Software
- First Release: Mac OS X Tiger Server (10.4.8)
- Last Release: Mac OS X Lion Server (10.7.5)
Identifiers
- Model Identifiers: Xserve1,1
Xserve (Early 2008)
Various
- Release Date: 8 January 2008
- Tech Specs:
Software
- First Release: Mac OS X Leopard Server (10.5)
- Last Release: Mac OS X Lion Server (10.7.5)
Identifiers
- Model Identifiers: Xserve2,1
Xserve (Early 2009)
Various
- Release Date: 7 April 2009
- Tech Specs:
Software
- First Release: Mac OS X Leopard Server (10.5.6)
- Last Release: OS X El Capitan (10.11.6)
Identifiers
- Model Identifiers: Xserve3,1