Socket 939 offered two main improvements over Socket 754: the memory controller was altered with dual-channel architecture, doubling peak memory bandwidth, and the HyperTransport bus was increased in speed from 800 MHz to 1000 MHz.
Socket 939 peamised kaks uuendust Socket 754 ees olid: mälukontrolleri arhitektuur muudeti kahekanaliliseks ja HyperTransport siini kiirus tõsteti 800 MHz-lt 1000 MHz-ni.