A much easier option: Get a USB 3.0 2.5G or 5G card. With a fully functional DMA on the USB controller it can get quite close to PCIE option. A setback for al

A much easier option: Get a USB 3.0 2.5G or 5G card. With a fully functional DMA on the USB controller it can get quite close to PCIE option. A setback for all Linux users at the moment: The only chipmaker making USB NICs doing 2.5G+ is RealTek, and RealTek chose to use USB NCM API for their latest chips. And as we know Linux support for NCM now is super slow, and buggy. I barely got 120megs from it. Will welcome any kernel hacker taking on the problem.