It's the same situation as all the bitcoin miners from years ago. They mined on the GPU, so the CPU didn't matter as much as how many PCIe slots the motherboard had. The CPU is purely there to drive the operating system and enable the network to communicate with the GPU.
If you aren't using the CPU for anything other than the PCIe slot to enable a Nvidia card for ML, then a very cheap potato makes a lot of sense.
It's the same situation as all the bitcoin miners from years ago. They mined on the GPU, so the CPU didn't matter as much as how many PCIe slots the motherboard had. The CPU is purely there to drive the operating system and enable the network to communicate with the GPU.
If you aren't using the CPU for anything other than the PCIe slot to enable a Nvidia card for ML, then a very cheap potato makes a lot of sense.