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Server board from Digital Equip, 1994. Photo of front and back of same board. Has gold fingers instead of connection ports, soldered IC's and two large ceramic gold slash corner with gold pin soldered chips, as well as another soldered one under the heat sink.
If I were scrapping it, would I de-solder the ceramic ones or leave on board. They are 2 inches square, each. I would probably have a total of 16 if scrapped all.

These are either gold finger cards or high telco. Due to the overall size I’m leaning towards gold finger cards.
If you remove the chips cleanly you’d have very low end peripheral and “pinless” CPUs. You’re better leaving the board together. You /should/ remove the heat spreader.

These are “drop in” cpu cards. Though they’re called all sorts of things; mostly incorrectly. Lol
The “server” these are from is actually a minicomputer. These use a primary CPU card (normally slot 8 or slot 4) but can also accept other processor cards in this drop in format. These processors could be used in tandem, like some Acorn systems, or instead of the primary, like the Sega TeraDrive and mid era Apple pre-Macs. Digital made both kinds of drop ins.

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This board is the size of my laptop, and there is an eighth of an inch airspace under the ceramic chips, and the pins protrude nearly an eighth on the backside. They actually have 300 pins

Yep. Colloquially stub pin CPUs. With rare exceptions once desoldered they will currently either fall into pinless (generally) or AMD ceramic (higher value chips like i860/i960/AMD FP87xxx, being the lowest ceramic gold pin class)
I can’t make an absolute grade on a cpu I haven’t sent in; so if you have more than a few I’d email Chris directly for a specific chip type quote.

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