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Please help identify these PSBs. Thanks!

Low telco/low telco
Midgrade/silver ram see note
Dirty gold finger card/gold finger card

Sell the EDO on ebay. Quick easy sale even condition unknown.

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Not yet awake this morning. Which is the EDO? Ebay showed me a lot of japanese art, but no electronics. Thanks.

EDO is also a city and period from Japan. Change the filter to computers-> parts.

EDO RAM.
It’s one of the rarest computer components out there. The price is kept artifice low by general agreement by nod and smile; since it’s vital to world back end existence.
It’s found in everything not updated from car computers to train track switching boxes to super computer backends running stock exchanges. Money counters. Generic atms. Military and commercial aircraft.
It’s gawd awful expensive to make, took off briefly despite the price, and only one company still has the tools and resources to still make it. Which they do at an intentional loss.
It shouldn’t ever be scrapped.

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Wow, this is great information, lostinlodos! I have a couple more of these as well I'll be sure to set aside. I wish I could remember what I pulled these out of.

On the dirty gold finger card, is there anything I can remove to bump it up to clean?

You would have to remove the transformer to get the Clean Gold Finger Card rate. I had several modem cards and I removed the transformers and sent them in as Clean Gold Finger Cards.

Oh, and don't forget to remove the batteries from #1 and #2.

I’ve written extensively about EDO over the years. Being a retro tech fanatic I run into it more than I want to. When I came across a 64k module in a coffee machine with a clock and auto start timer I started digging.
This stuff is in everything for about a six year period. A (less than) kind ebay user pointed out to me over two decades ago that overpricing it would have me blacklisted by every computer company on ebay at the time. And I slowly learned the reasoning behind it.

As I say all over this site and others: never ever scrap EDO. Sell it doa if you must. Bad cells can be programmed around. Bad sticks can have modules removed. Etc etc.
You won’t make any money but it’s worth it to know you help keep our literal world running!
Walk into any corner computer shoppe worth salt and offer it for free and watch them gush over you. I had a tech bow down and call me “Mr God” once for a dozen sticks of it.

I don’t understand what makes it so difficult to make. But I understand the reality of continuing need.

nothing digital the general public does today fails to pass a few EDO cells along the way. Be it Netflix processing your credit card over the EDO-using ACH backend, or the blinking sign on the Vegas Strip. The 98 Chrysler your neighbours have out front. That 1999 digital alarm clock. A plasma TV? The stop light down the street.
For better... no, for worse, definitely for worse, we are completely dependant on a short life technology the can’t be economically replaced be new stuff.
Sell it
Donate it.
Just don’t scrap it. If you do and my power goes out, lol.

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This is excellent information. Thanks again for sharing. I promise to not scrap any EDO RAM.

I'll remove the transformer from the GFC.

On number 3, should I remove the aluminum heat sinks?

Thanks again everyone!

Removing the sinks on midgrade is pointless. You lower the price of the board.

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