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It's been done by Revoccases, but on a different riser that should be functionally the same. The Gen 3 x16 riser had a 4 pin connector, but only 2 pins were used.With the Gen 4 x16, ADT reduced it to the 2-pin connector.It's visible in the 2nd image of this post (also side note- seriously one of the most impressive things i've ever seen and I learned everything about m.2 gpu from this)[URL unfurl="true"]https://smallformfactor.net/forum/threads/rcc-egpu2-a-tiny-portable-0-6l-thunderbolt-gtx-1650-egpu.17370/post-261466[/URL]Depending on how janky you want the build to be, you can either add another brick just for the GPU (or upgrade to 240w 19v Gan brick and split it)+ use a picobox or hdplex dc-dc / or use a single 12v psu + a Y-splitter like you are planning.
It's been done by Revoccases, but on a different riser that should be functionally the same. The Gen 3 x16 riser had a 4 pin connector, but only 2 pins were used.
With the Gen 4 x16, ADT reduced it to the 2-pin connector.
It's visible in the 2nd image of this post (also side note- seriously one of the most impressive things i've ever seen and I learned everything about m.2 gpu from this)
[URL unfurl="true"]https://smallformfactor.net/forum/threads/rcc-egpu2-a-tiny-portable-0-6l-thunderbolt-gtx-1650-egpu.17370/post-261466[/URL]
Depending on how janky you want the build to be, you can either add another brick just for the GPU (or upgrade to 240w 19v Gan brick and split it)+ use a picobox or hdplex dc-dc / or use a single 12v psu + a Y-splitter like you are planning.