1. A network switch comprising: a predictor to use data in a packet to predict a flow for the packet; a memory to store bits of the packet as the packet is received by the network switch; a forwarding engine to forward at least a portion of the packet on a switch fabric to an egress port determined from the predicted flow; and a lookup module to perform a lookup to determine a flow for the packet, wherein the forwarding engine is to forward the at least a portion of the packet on the switch fabric to the egress port determined from the predicted flow prior to the lookup module determining the flow, and the predictor is to determine the bits prior to the storing in the memory or at the same time of the storing in the memory.