[Rychard]

What would be the benefit of using SFP+ on mainstream consumer motherboards? It would further increase the effective price to consumers as they'd have to purchase a separate transceiver, which are bulkier and might overly crowd an already compact I/O shield layout.

[Arubis]

Hopefully a cheap transceiver chip will change this, too, but all-copper 10GbE switches are stupid expensive.