KIMG0086 Top two are backplane. You can trim the fingers Bottom left is also backplane. Bottom right will likely fetch telco. It’s full of ICs, has little leftover bare room, no junk steel etc weight, and lots of high grade gold o-bus pins.
KIMG0087 Top mother board is definitely a small socket. The cpu is soldered in the middle and it’s missing the bridge chip completely. The bottom one is more difficult. Often an ePCI slot for the riser can count as a large socket when the rest is there, much like slot processor boards. Unfortunately here it looks like a proprietary riser that contains most of what makes a motherboard a motherboard. The bridge chips are there but all the other controllers are missing. I’m going to say small socket here. Either this board was very cleanly desoldered, or the entire I/o subsystem resides on the riser card, most likely with a secondary cpu socket.
The network cards are peripheral
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