for what it's worth, supermicro makes a carrier board that would allow you to use those same SXM2 V100s with a standard motherboard. You would need to hack together a power cable, and get an adapter to convert a PCIe 16 port to 2x or 4x pcie x 4 cables.
SXM is generation specific, so an SXM2 board will only work with the 32gb or 16gb V100 GPUs. The supermicro carrier board is the only one i'm aware of that is not vendor locked.
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[ 3.0 ms ] story [ 19.5 ms ] thread"Reverse engineering Dell iDRAC to get rid of GPU throttling":
https://news.ycombinator.com/item?id=35890554
https://github.com/l4rz/reverse-engineering-dell-idrac-to-ge...
SXM is generation specific, so an SXM2 board will only work with the 32gb or 16gb V100 GPUs. The supermicro carrier board is the only one i'm aware of that is not vendor locked.
If you are willing to gamble, this was just posted on STH: https://www.ebay.com/itm/256088074324
I suspect that it might run on 8 PCIe lanes as only one of the connectors is populated. Might be worth a shot.