Sun’s 10GbE adapter sends data over fiber optics instead of typical Cat5 Ethernet cable used in today’s typical network environments. The adapter also has dual ports, each capable of 10Gbit/sec. transfer rates and a combined rate of 16Gbit/sec. The card will sit in an x8 PCI-Express slot and ship with a starting price of $498 USD per card.
This card looks like a true beast and puts any other high-end network card out there to shame. It would take a huge workload to have a $500 network card sound reasonable!
Source: Daily Tech