Worth mentioning this 10GbE on Paper also support 5Gbps and 2.5Gbps as well. This is going to be some very nice upgrade for those who have previously laid some decent CAT6A cables.
Edit: Maybe they are testing within one system?
> We tried PCIe card NIC to the onboard NIC, and onboard NIC to onboard NIC.
Havent used realtek NICs for some time on my hardware but are their drivers still very CPU-bound? I recall them doing a lot more work via CPU than say, a comparable Intel NIC would.
Cheaper means more mobos will have 10gig I guess