Sun386i memory upgrades?

[peter%catuc.UUCP at arizona.edu]

In the great quest to upgrade the memory in our 386i 25Mhz machines
without paying Suns high prices for memory I've been trying to figure out
what speed memory is actually required for the machine. Sun at first said
80ns but then waivered when asked about the speed of the modules they
actually shipped in the machines.

Third party vendors vary - those that seem to do the most Sun products say
ay 100ns will work.

The part numbers for the modules themselves and the chips on them taken
off of several Sun RR250's are:

	Modlue : NEC MC-42100000A9B-10
	Chip:  NEC 4210000-10

	Module : HB56A19B-10s
	chip	 : HM51000JP10s	(Hitachi)

These parts seem to have numbers that indicate they are only rated for
100ns operation.

Does anyone no what speed rams are required?

If 80 ns is required how can Sun ship these parts, if they are in fact
100ns chips?

Peter Collins
Computer Automation
..arizona!catuc!peter