If you are looking to improve your virtualized datacenter, 10Gb Ethernet really deserves your attention. It delivers more than twice as much bandwidth as quad-port gigabit, lower latency, lower power per gigabit, and the ability to greatly simplify your network infrastructure--especially with virtualized servers. 10GbE is a game changer for I/O virtualization; it is much more than “a bigger pipe” for your (virtualized) network traffic. That is the good news. The bad news is that you have to take quite a few hurdles before I/O virtualization does it's magic. One bad decision and you end up with a power gobbling, CPU hogging monster. We gathered two modern 10GbE NICs, one from Solarflare and one from Neterion, and checked if they are really an improvement compared...