Though they might be a bit more expensive than other sources, I've had 
good luck getting the right memory for older machines from 
http://www.memoryx.com. You can select ram by the sun model you have.

On Oct 16, 2003, at 20:43, Paul Thompson wrote:

> Hi,
>
> I've got a few SparcClassics without memory in them, what sort of RAM 
> do
> they require? I tried the Simms out of my mac without any luck. I've 
> had a
> bit of a hunt around on the internet and been unable to find the exact
> answer I was looking for.
>
> Cheers, Paul.