[weblacky]

Is each bank of memory (4 slots) the same exact chip? Can you post the sticker numbers/model for me? I'll check compatibility at least.

I'm going to assume you've read the manual of not only the memory type which has to be non-EDO fast page 72 pin SIMM memory @ 60 or 70 ns WITH PARITY, but that each of the bank of four has to be identically mapped and size chips, preferably the exact duplicate chip per four slots. The bank you start with is closest to the power supply.

Also while the manual doesn't say I know that other SGI's talk about having the largest modules go first. So you might also want to try your larger density modules in bank zero and the lower density ones in bank one.

If you're mixing & matching chips of the same density please provide all information, textually.