The collected works of OldBlueBear

Ultimately I can suck it and see, but maybe someone has already tried this and has the answer:
Is there any information of how the internals of the duel R14k CPU modules are physically built up, laid-out ?
Could I open a R12k duel CPU module and put in 14k@600MHz chips and would it run on an Octane 2 ?
I ask as 14K@600Meg duel modules appear thin on the ground. But I see a number of single R14k@600Meg CPU modules around and R12K duels modules to possibly make it (maybe) cost effective to do this swap.
But wonder if anyone has tried this or knows if there are any things such as pad misalignment from chip to chip to prevent this working?
OBB

OK the term should be dual, to mean two; (so duel was a typo - bad eyes) ; dual appears to be standard terminology used on various sites when referring to the SGI PN 030-1778-001 Dual-R14000 600MHz (2MB L2) CPU Module.
I have so far found very little real in-depth technical gen about this R14000@600 processor chip or how the dual CPU module is built up (constructed) internally hence my question. Had swapping the chips been feasible, I would have sent the modules to a third party (600+ miles away), who has the hot air soldering kit and skills (in the UK). As my eyes are too bad for such work (gruff!).
i have managed to either buy in or find on the web normal user and Sys-admin manuals but I am still looking for hardware manual or manuals for Octane2 frame (or case ) , IP30 Processor board and the V10 graphics board. While I may not need this gen immediately I will in the future, as the nearest SGI knowledgeable people are at least 600 miles away. So either I fix it or it stays broken. I need in depth Techie-stuff, down to logic analyzer/ scope trace and test point voltage gen if it can be got.
Any pointers, URLs etc would be appreciated and thank you in advance.
best 73s, OldBlueBear

Thank you Hanei, some one finally who sounds like they understand what my original technical question was about (but not why). My thinking was along the following lines: The supply of R14000@600MHz x 2 (ie dual CPU ) modules appears very thin on the ground and around US$1000 a throw. But low speed dual CPU modules are to be had . As well as 030-1805-002 Origin 300 Motherboards with 4 off R14000@600MHz CPUs at reasonable cost . What I proposed was to have the 4 CPUs removed from the Origin 300 bard and two inserted into the low speed R14000s module.
I also asked there any known technical reason why it would not work , and had anyone tried this as to me it was a no brainer. The feedback; the voltages would be wrong sounds odd as all the CPUs are R14000 although I also thought a dual R12000 might be usable. All the above was without access to good technical gen on either the construction of the dual CPU modules or the in-depth spec for the MIPS-R14000/R12000 Chips (pin outs,voltages etc). That gen may be out on the Web some place but I have been unable to locate it so far.
I calculate, depending on the cost of doing the un-soldering and re-soldering the end product would be cost effective.
If someone has drawings of the R14000 dual CPU module construction and internals, and/or the in depth spec for R12000 and R14000 CPUs would they please send me a copy. I source most of my kit direct from the US cheaper than the EU or UK which is overpriced and over here! I observea 2xR14000@600Meg module will cost me nearer US$ 1000 than Euros 400 quoted, based on four quotes so far . best regards, OldBlueBear

Hi All, thank you all for your input. In the end I have shelled out for the R14000 @ 600 Meg, twin CPU 030-1778-001 in a spare IP30 processor tray.

Octane 2 Hardware schematics and assembly drawings
hi All,
I am searching for Octane 2 Hardware schematics and assembly drawings but finding nothing so far on the web or Wikie. My first question is has this stuff ever been released.? If yes; a pointer to source please.

I need any information how the Octane 2 is put together. How the frame (main enclosure) electronics is hooked up details of any wiring loom, wiring diagrams, connector pin outs etc. The sort of thing required to trace signals with a DVM pin to pin (cold system) or with a scope or logic analyzer, classic hardware support gen.

I also need full hardware board gen such as any schematics, technical description etc of the IP30 processor tray (motherboard?) and the Vpro V10 and V12 graphics trays, not forgetting the SCSI back plane and X-Bow (version 1.4) (have I missed out anything from the list?)

Appreciate any help on this as still feeling my way into this Octane 2 box.

OBB

OK I asked and the reply is about what I expected - not out there. Thanks anyway for the feedback.
Why I would want it: well SGI stopped production in June 2004 of the Octane 2. So if you look at normal MTBF for it's sub-assemblies and their component parts. Bits are going to have started to fail after 14+ years even for the newest machine, last off the line. To keep it running over time you need this sort of information or you consign a perfectly good system to the scrap yard when the supply of replacement sub-assemblies dries up. With the right gen it should be possible but not easy to fault find to the component level with good documentation.
That was the reason I asked . The alternative is to run two identical systems and use the "good" machine as a part replacement for in depth documentation when the second machine goes down. OBB.