eSATA is faster than USB 3.0 — at least right now

USB 3.0 brings a host of other improvements over the 2.0 spec and eSATA, more power efficient, allowing more power-hungry bus-powered devices and better power management when devices are idle. USB 3.0 also can theoretically hit 600 MB/s. But right now it’s not the ultimate external data transfer protocol. That title belongs to eSATA.