Got it on ebay last year around this time. Old server ram or something. BIG FAT chip..
Ah, those are the thick modules you have to fix to the board, because it does not fit properly, right? Those are easy to find, as they are somewhat common.
The module I have here is very slim and fits in the socket of the 1230. I never saw any other source for it (except for extreme high prices).
But that does not mean one cannot make a bargain on ebay everyday
