And was powered by a MIPS RISC microprocessor, R10000, R12000 or R14000@600 Mhz for the latest models.
Now, the new Octane-III is powered by a bunch of Intel XEON 5500 processors, running at some extravagant speed. But I guess those processors are not cheap, and the new baby has a lot of sockets ready for them:
Here is how it looks like:
For pricing, more info, etc., please visit SGI's website.