I wanted to have one computer (Win10 Intel 12900) to be able to connect with Truenas (community edition) at 10G. I have a Unify network with the USW Pro XG 10G switch, I use 6a cables, no QoS, and purchased a pair of H!Fiber 10Gb RJ45 PCI-E Network Cards with the Intel X550-AT2 Chip. Both nics show 10G link (green), and Unify network shows both connected at 10G. However, iperf3 only shows 3.6 Gbits/sec. What am I missing here? Shouldn’t I get better transfer speed? Are there other drivers that need to be installed?
Try direct cable to eliminate the switched network.
I tried the direct cable between 2 computers running Win10. iperf3 was 2.97 Gbits/sec, even worse. I suspect the drivers for these new (built on 550 Intel AT2 chips) nics are the problem. New Intel drivers won’t work (I tried), and the drivers Win10 installs seems to operate at 2.5G speeds even though you get a 10G link indicator. I will search for other nics. I had read that TrueNAS likes 550 chipset, but I don’t want to spend the money for a 10G Ubiquity switch and end up with nic cards that need older drivers to work. Are there 10G cards on Amazon using current technology that work well with TrueNAS and Win10 using RJ45?