XTRX SBC suggestions 2-Lane PCIe

Can somebody suggest what would be an ideal Single board computer for development with the new XTRX SDR, ideally powerful enough to support the full bandwidth of the XTRX. Is there anything available that has Mini-PCIe with 2-lanes considering XTRX has this weird config.

That or would using some sort of Mini-PCIe to PCIe converter the only viable option to get the full bandwidth?