SE/30 64MB RAM Upgrade

[turbo]

Just bought 4x16MB SIMMs from OWC, whose SIMMs I understand to be compatible with the SE/30.  Filled bank A -- no RAM in bank B.  Powered on and got chimes of death and vertical bars on the screen.  I had the board cleaned and recapped several months ago and all of the slots look pristine.

The repair SE/30 page shows this configuration (and only this configuration) as "No Good".  What's the deal?  Is this configuration bad for some reason?

 

[ArmorAlley]

I seem to remember that the banks may not be empty. This is the case with IIcx. Do you not have the original SIMMs?

 

[tact]

Happened to me too. The se30 and other macs have specific ram configuration. In order to use only 4 slots of ram, I think you have to use bank B and leave bank A blank. Or you have to fill in bank B with other ram.

In my case the 64mb ram I got were too big and wouldn't fit in bank B they were a bit too tall the way the logic board goes in the case at an angle. I had to fill bank A with 64mb and bank B with with 4x1mb of ram, Which is even better got 68mb! =)

 

[turbo]

Thanks everyone! I opened it up last night and put 4 of the original 1MB SIMMs in Bank B and it started up immediately. My hope was to only use the new SIMMs since they are 60ns vs the 80ns originals, but I can always max it out at 128 later if I want.

 

[unity]

I think the speed of the RAM on the SE/30 runs at 150ns, regardless of what is installed.

 

[olePigeon]

Thanks everyone! I opened it up last night and put 4 of the original 1MB SIMMs in Bank B and it started up immediately. My hope was to only use the new SIMMs since they are 60ns vs the 80ns originals, but I can always max it out at 128 later if I want.

Treat yourself to 4 more SIMMs for Christmas.