The Sun Ultra 45
The final desktop class workstation produced by Sun Microsystems that used the SPARC architecture, namely the Sun Ultra 45.
The Ultra 45 came out in 2006.
The line was discontinued by late 2008, marking the end of a long tradition of SPARC workstations aimed at engineers, scientists, and other professionals needing serious UNIX class power at their desks.
In its day, using SPARC and Sun workstations was a status symbol among the workstation crowd, a world distinct from standard PCs or Macs.
What made it special
SPARC is a RISC (Reduced Instruction Set Computer) architecture, which simplifies instructions and delivers strong performance per clock when running certain workloads (think AI today).
Starting with 32-bit SPARC (SPARC V7/V8) and later the 64-bit SPARC V9 (beginning with UltraSPARC in 1995), SPARC systems became competitive high-end workstations and servers.
For many specialized tasks like scientific computing, UNIX development, CAD, network servers SPARC workstations were widely used.
What the Ultra 45 offered and why it was the last
The Ultra 45 could be configured with one or two UltraSPARC III 64-bit CPUs at 1.6 GHz.
It supported up to 16 GB of RAM.
Aside from the CPU architecture, the physical form factor (tower, expansion slots, case size) could have passed for a mid-range desktop PC of more recent years, meaning from a hardware-box perspective, it didn't look overtly exotic.
The machine ran Solaris (Sun’s proprietary Unix), which is now owned/maintained by Oracle.
By 2006–2008, those building a final SPARC workstation knew the writing was on the wall as demand was dropping, and cheaper, more general purpose x86 hardware (standard PC) was becoming good enough for many tasks that once required a SPARC workstation.
The end of an era
The discontinuation of the Ultra line in 2008 effectively ended the mainstream era of SPARC based desktop class workstations from Sun.
Over time, progress in commodity PC hardware (x86), the rise of open-source Unix-like operating systems (Linux, BSD, etc.), and broadly improving performance of standard desktops made dedicated UNIX workstations less compelling and more niche.
But we still love UNIX to this day.
The SPARC architecture itself hasn’t vanished.
SPARC (and SPARC-derived architectures) persisted for servers, embedded systems, some niche uses but the classic model of a workstation on everyone’s desk, like in the 1990s, is gone.
Nostalgia
It’s a look back, a kind of farewell to an old friend, documenting how what was once considered high-end computing is now obsolete by modern desktop standards.
That helps us to understand how quickly computing power evolves.
This is why I love retro computing tech.
It shows how technological ecosystems change.
What once required specialized hardware (RISC + UNIX) becomes commoditized and democratized (x86 + open OS), leading to consolidation and disappearance of older product categories.
As you know, RISC is back.
Comments from users:
Unix being the light in the darkness of windows 3.11.
I have some nice memories (phisical and virtual) related to operating different Sun machines. While I was bashing different Linux and *nix keyboards, the SunOS was ten thousand times more stable than a Linux machine at that time, after a lot of crap I was doing. While a Linux 6 was going into "Segmentation fault" 😂, a Sun was blinking the cursor waiting for more dumb crap from me
These were seriously quick back in the day.
I loved it, but was tooo slow...
worked on solaris when i was admin in university. encountered spark servers. where neat at this time. but now ....
Id rock that box - today. If i had it.. I would make it a fileserver and thro it in my closet
We used to have these back in the day. Solid machines and I always loved the UI. Great for prototyping changes.
There were a number of other desktop UNIX workstation manufacturers around that time, for example Three Rivers/ICL PERQ and Silicon Graphics. However, only Sun survived. I recall the Spy editor on PERQ.
I remember them well. We had 100’s of Sparc desktops at VSEL/BAE Systems in the late 90’s.
mine still runs beautifully using our https://t2inux.com to this day ;-)
better machines I worked on!
in a bad car accident, a friend's Sparcstation flew very far but only brought back a small dent in a corner
We use it to play BZflag at Hackerspace Trójmiasto
I truly loved the SPARC hardware and for that matter Solaris/SUN OS. Yet there cost did make them more prohibitive. While today’s PC hardware + unix like open OS can match and in some cases out preform, I still can’t help but look back fondly at those days. (You severed us well SPARC I solute you)
My first UNIX experience was on Solaris Terminals in 1999. Nice to remember 😉. And the SPARC64 architecture is still supported of some OS. Have a look at https://distrowatch.com .
Action Retro on YT covered this workstation. What a BEAST for its time!
I had one of these at my work desk while working on CADDS5
me too. Though I was an application engineer supporting 100’s of Sparc desktops. I was never a user
Beautiful nostalgia. Do Silicon Graphics too)
Ironically, the remaining big Unix RISC workstation manufacturer is Apple. A Mac Studio has an ARM CPU that packs a lot of punch, macOS is a Unix, and Macs are kind of a status symbol (although it’s more like a corporate Windows box being a low-status symbol).
What a beut'. I would so build a sleeper PC in that case.
It’d be a deadly sin. Use it as a Unix machine as God intended it to be.
I wouldn't do it to a working machine. That's blasphemy. But if I found a defective one with a case in a decent state, that would be nice.
Sun Unix servers were the first serves I was trained at work to use Solaris Unix on.
In my career I've used many flavours of Unix/Linux but I still feel Solaris was the best and I love it.
Many data centers I've worked in had Sun Solaris servers running Solaris Unix, so Solaris was a very popular version of Unix.
The most powerful Sun server I operated/ran was the Sun E10K supercomputer at the time it was a very powerful machine.
Its very sad Sun Microsystems went bust, if they'd stopped making work stations but had carried on making newer versions of the E10K and had made Solaris compatible with Linux then Sun and Solaris Unix would have survived as it was a much loved and used version of Unix.
yes mate, Solaris, Open Suse and RedHat for security are still one of the best Linux distros used inside government complex, and also Industrial Systems developers or Energy providers. 😎 😊
I used to have Ultra 5 at home. Not anymore for, like, 15 years.
These mfs are still expensive as hell
they are still great computers for the discerning user.
yeah I wanted to buy one then remembered I’m poor
These are sacred machines on the retro computing tech market
Enjoy #UNIX
Well, that was exciting. See you in the next one!