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NewsNew Allwinner RISC-V Chip Uncovered on Tiny Board
There's extremely little information about the CPU in that SoC. We don't know if it supports the G-profile.
Allwinner does not even advertise that it is a RISC-V.
Also, 64 MB RAM isn't much for a desktop (these days), so I suppose it was never intended to be used as anything than as an embedded control MCU for the other hardware in the SoC.