10G capable CPU / system anyone?

[athurdent]

Hi,

ATM, I am using OPNsense in a Proxmox KVM on a Supermicro X11SSL-F with an old Core i3 7100. In combination with a PCI-passthrough'ed ixl Intel X710-DA2 10G adapter (ixl was kindly recommended by Sunnyvalley, thanks again guys!) gives me nice download speeds around 2.5G, but maxes out the CPU.
I'm looking to replace that old system at some point in the future, with a recent X12 Supermicro (-F) board and a CPU, both not yet determined. Single core high performance still is the key it seems, so any super duper and expensive Xeon is probably not the right choice today.
Is anybody already using a 10G capable Sensei install and can share details?
Thanks!