Aww, look at this pretty baby I got in the mail just now.pic.twitter.com/IXUvqNMGyF
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3/ This was no coincidence, as the initial line of Indigo 2 machines were, broadly, the same underlying architecture as the lower-profile and lower-cost Indy machines: The fundamental differences involved an internal optical drive bay, a second SCSI controller, and an EISA bus.
4/ As an aside, the EISA bus occupied the same segment of the machine's memory map as the Video-In No-Out ("VINO") chip on the Indy, which is fundamentally why the Indigo 2 line lacked such capabilities without a dedicated capture card.
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5/ SGI started experimenting with the next generation of MIPS chips beyond the R5000, and they hit upon the R8000: A multi-chip solution with phenomenal floating-point performance. They released this as the "POWER Indigo 2" line. Same teal case, but a different CPU.
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6/ This line did not last long, however. Educational institutions, in particular, quickly found that the POWER series of MIPS processors had some really gnarly floating-point bugs despite the performance. This can be confirmed by looking up contemporary posts on Usenet.
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