There are 72 pin 128 MB SIMMs which are not uncommon. I picked up a bunch of them for an average of about $10 each, usually in batches of 8 when they were pulled out of servers. Unfortunately, I appear to have deleted my saved search on Ebay, which would have yielded up the part numbers. Ah, here we go, it's still in my SnipeSwipe listing. The 128 MB SIMMs are HP number D4893A and the 64MB HP SIMMs are D4290A.
Ultimately, the manufacturer was Samsung, and there's a big long part number from them, but typically, they were labeled for sale or use by IBM or HP and bear either an HP part number or an IBM part number. But they're constructed with sixteen largish 16M X 4 memory chips manufactured by Samsung, and usually eight more 16M X 1 memory chips which are physically smaller (fewer pins and not as wide). The smaller chips are the parity chips. Sometimes the IBM SIMMs can be found without the parity chips. A long time ago someone posted a link in the Trading Post forum to a seller who was selling lots of ten 64MB SIMMs for something like $10 per lot.
If I ever get organized, I'll do an inventory and sell off my excess, but what's a reasonable price for a 128 MB SIMM? I know I have a bunch of them in a big pink anti-static foam holder.
Ultimately, the manufacturer was Samsung, and there's a big long part number from them, but typically, they were labeled for sale or use by IBM or HP and bear either an HP part number or an IBM part number. But they're constructed with sixteen largish 16M X 4 memory chips manufactured by Samsung, and usually eight more 16M X 1 memory chips which are physically smaller (fewer pins and not as wide). The smaller chips are the parity chips. Sometimes the IBM SIMMs can be found without the parity chips. A long time ago someone posted a link in the Trading Post forum to a seller who was selling lots of ten 64MB SIMMs for something like $10 per lot.
If I ever get organized, I'll do an inventory and sell off my excess, but what's a reasonable price for a 128 MB SIMM? I know I have a bunch of them in a big pink anti-static foam holder.