We're not yet to the point where a single PCIe device will get you anything meaningful; IMO 128 GB of ram available to the GPU is essential.
So while you don't need a ton of compute on the CPU you do need the ability address multiple PCIe lanes. A relatively low-spec AMD EPYC processor is fine if the motherboard exposes enough lanes.
So while you don't need a ton of compute on the CPU you do need the ability address multiple PCIe lanes. A relatively low-spec AMD EPYC processor is fine if the motherboard exposes enough lanes.