[jan-jaap]

Looks like Ian is missing some info on some CPU models. There was a 550MHz R14K as well.

To be honest, I doubt any 400MHz R12K systems left the factory with an 0887 mainboard and the cube logo skins. That CPU just happens to be the fastest that still functions with the 0887 mainboard.

My first Octane was technically an in between (1.5 gen?) Octane: new logo green skins, single 300MHz R12K, SE graphics, new PSU but old mainboard. I bought it around the time these things started to appear off-lease and was completely unmodified. I think it's still sitting in my attic. I think the 270MHz CPU was introduced shortly after the 300MHz R12K and that one requires the newer '1467' mainboard.

I have an Octane 2 as well, and when that system was upgraded from dual 400MHz to dual 600MHz the old CPU was left behind. There was a thread at some point on Nekochan I think about what would be the ultimate 1st gen Octane. At that time I had this particular system sitting, I think it was originally a dual 250MHz MXE or maybe dual 300MHz. Cube logo skins, 0887 mainboard. I simply put the dual 400MHz CPU in. I still have this system but instead of the secondary SE card it now has a video option. It also has a PCI cage with gig ethernet, LVD SCSI and FibreChannel.

There have been 2 Impact and 2 VPro graphics generations, 2 PSU generations, 3 skin generations, 2 mainboards and 3 or 4 frontplanes. I believe most people would call something a 1st gen Octane if it has the 0887 mainboard, Impact graphics and the cube logo skins, but of course with all these revisions there's plenty room for discussion. I don't remember SGI talking about generations other than calling the blue box with the VPro graphics an Octane2.