In the old days (i.e. about 5 years ago) SGI workstations were one of the fastest machines out there (and in many cases the ONLY ones out there) for doing things like 3D modelling with SoftImage and Alias WaveFront (the precursor to Maya and at that time only available for IRIX, SGI's OS); or DALiM LiTHO or Barco Creator (for prepress). Even PhotoShop used to ship on IRIX at one time, v3 I believe...
While the MIPS chip, SGI's own CPU, didn't run especially fast (500Mhz in the days when Pentiums ran at something like 1.0Ghz), the SGI machines were doing much more per clock cycle (sound familiar?
). The machines used gargantuan graphics cards and ran OpenGL like stink - though since SGI invented OpenGL, that's not too surprising. There was also the UNIX stability, 64-bit OS for large RAM addressing, yadda-yadda....
The SGI architecture is all about bandwidth. You can move **huge** amounts of data through an SGI workstation - or even **huger** (wait! That's not even a word!) amounts of data from an SGI server. As an example the theoretical maximum data transfer for PCI (in the days when PCI was all we had) is 144Mbps. The cheapest SGI workstation at the time (the SGI O2) had a bandwidth of 3.4Gbps!!!)
However, over time 'everyone elses' boxes closed the gap on bandwidth. CPUs and bus speeds got faster and (crucially) Apple moved to a UNIX-like OS. Software vendors like Alias WaveFront and Dalim Software started adding new platform support on OS X and Linux - much easier ports from IRIX than going to WinBlows. Actually, SoftImage were bought by M$, but I've not heard of them for years - anyone out there know what happended to them??
Today, SGI has still got a killer reputation for moving huge amounts of data around, as well as delivering ultra-high-performance systems to organisations who are after serious graphics firepower like Boeing (flight sims, designing aircraft,etc.) weather forecasting and scientific labs (rendering from calculations).
However, SGI is losing money like its going out of fashion - their shares are penny stock now. Reason (IMO) is that you can buy a "fast enough" UNIX-like box running Linux or OS X for under $10K, so why spend $50K (
) on an SGI workstation?
..even if it does look pretty