I have one Jetway board in production with 5.0 with intel daughterboard
work fine but it's only 3 intel NIC so would have to use one realtek. I
didn't try realtek NIC with lot of traffic.
I now use Lanner FW-7535 instead. Cost a little more but like them
better and Lanner service is great. Atom board with case + 6 Intel NIC.
I think those are also 82574L so not the fastest intel NIC but for low
budget firewall, those are fine. Also, the Atom is a desktop version so
take more power than those in jetway I have use.
Michel