AWS won't sell you the physical hardware. Ampere will, though — Altra's going to be good. Also there's Marvell (ex-Cavium), but that's custom cores, and rather

AWS won't sell you the physical hardware. Ampere will, though — Altra's going to be good. Also there's Marvell (ex-Cavium), but that's custom cores, and rather HPC-focused. More choice is more better though, and since Jon Masters works for Nuvia, we know Nuvia is going to have the most compliant and least quirky hardware, especially in the PCIe area :) Though to be fair, Ampere's first generation is already very decent in terms of this, and Ampere even promised to eventually contribute support for their hardware to EDK2 TianoCore open firmware..