[lunatic]

The answer beyond "yes, Sun adapters and cables will work on SGIs" is somewhat complex.
SGIs use sync on green, but Suns use composite sync. For Suns, sync is put on another pin. So if you have a genuine SGI adapter or cable, it won't work on Suns. SGIs use some pins to determine the max resolution of the monitor, so it often defaults to the lowest sync rate (which is a good default of course). You can override the settings in software later.