Sporting a speedy USB 3.0 interface, the Kingston DataTraveler HyperX USB 3.0 64GB flash packs 64GB of capacity onto a form factor that can fit onto your key ring. But what about performance? Around here, we think Performance is King, and we've heard people complain these large capacity flash drives are slow as molasses in a Canadian winter. Just how fast is USB 3.0? Well, we put the Kingston DataTraveler HyperX and we came away grinning.