Ultra 1
Family of Sun Microsystems workstations
The Ultra 1 is a family of Sun Microsystems workstations based on the 64-bit UltraSPARC microprocessor. It was the first model in the Ultra series of Sun computers, which succeeded the SPARCstation series. It launched in November 1995 alongside the MP-capable Ultra 2 and shipped with Solaris 2.5. It is capable of running other operating systems such as Linux and BSD.
01Specifications
The Ultra 1 was available in a variety of specifications. The Ultra 1 Creator3D 170E launched with a list price of US$27,995 (equivalent to $59,200 in 2025) - along with the Ultra 1 Model 140, and Ultra 1 Creator 170E.
CPU
Three different CPU speeds were available: 143 MHz (Model 140), 167 MHz (Model 170) and 200 MHz (Model 200).
Models
Model numbers with an E suffix (Sun service code A12, code-named Electron) had two instead of three SBus slots, and added a UPA slot to allow the use of an optional Creator framebuffer. In addition, the E models had Wide SCSI and Fast Ethernet interfaces, in place of the narrow SCSI and 10BASE-T Ethernet of the standard Ultra 1 (service code A11, code-named Neutron).
Memory
The Ultra 1 uses 200-pin 5V ECC 60 ns SIMMs in pairs, the same memory used in the SPARCstation 20.
02Similar Machines
Similar Sun machines were the Netra i 1 servers which had the same chassis Archived 2006-12-30 at the Wayback Machine and the UltraServer 1/Ultra Enterprise 1 servers .
Sources and credits
This article is adapted from the Wikipedia article “Ultra 1”, written by its contributors and licensed under CC BY-SA 4.0. Fathomly has changed the layout, removed citation markers, navigation and maintenance notices, and adjusted punctuation. This adapted version is shared under the same license. For references, see the original article.
Images, from Wikimedia Commons:
- Sun ultra 1.jpg by Caroline Ford, CC BY-SA 3.0
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