There are also RJ45 based 10G NICs, such as the Intel X540. They cost a little more than the X520 SFP+ based cards, but most large GigE switches use SFP/SFP+ uplink ports, so I went with the SFP+ based NICs.
With RJ45 based 10G, you want to use Cat7 cables and it doesn't like electric interference. Fiber is completely immune to that.
RJ45 based 10G switches are still very expensive, so they are typically not used in home environments.
With RJ45 based 10G, you want to use Cat7 cables and it doesn't like electric interference. Fiber is completely immune to that.
RJ45 based 10G switches are still very expensive, so they are typically not used in home environments.