The Ultra 60 is a fairly large and heavy computer workstation in a tower enclosure from Sun Microsystems. The Ultra 60 was launched in November 1997 and shipped with Solaris 7. It was available in several specifications. Sun Ultra 60 workstation # 1 CPU Model 1300 and # 2 CPU Model 2300, with Sun Creator3D graphics – began shipping February 1998. The last order date was August 4, 1999. Sun Ultra 60 workstation # 1 CPU Model 1300 and # 2 CPU Model 2300, with Sun Elite3D graphics – began shipping March 1998. Sun Ultra 60 workstation # 1 CPU Models 1360 and # 2 CPU 2360, with Sun Creator and Sun Elite3D graphics – began shipping April 1998. Sun Ultra 60 workstation # 1 CPU Models 1450 and # 2 CPU 2450 – began shipping in May 1999. Sun Ultra 60 workstation models began shipping with 18-GB SCSI SCA, 10000-rpm internal drives in November 1999. The Ultra 60 is similar to the higher-cost Sun Ultra 80, but is somewhat smaller and supports fewer CPUs and less memory. The Ultra 60 may be rack-mounted using an optional kit (X9627A or 560–2548) although they were generally not rack-mounted, since the Ultra 60 was designed for use as a workstation rather than a server. Details can be found in the Sun Ultra 80 Rack Mount Installation Guide. The Enterprise 220R is an Ultra 60 motherboard in a specialized rackmount case with custom power supplies and other parts. The Ultra 60 is no longer sold new and was replaced by the Ultra 45. The last order date for the Ultra 60 was July 2002 and the last model to be shipped was in 2003, so it is now considered by Sun to be end of life. Operating system Although it shipped with Solaris 7, the Ultra 60 will run later versions of Solaris up to 10, as well as Linux and FreeBSD. The Ultra 60 cannot run Microsoft Windows directly, although an internal PCI card (SunPCi II pro and similar) from Sun could be fitted to allow the use of Windows. Hardware specifications and notes CPU The Ultra 60 came equipped with 1 or 2 CPUs. The CPUs run at 300, 360, or 450 MHz and have 16-KB data and 16-KB instruction cache on chip with a 2MB or 4MB external secondary cache (secondary cache size depends on CPU model). Memory The Ultra