Sonnet Technologies has announced the availability of its new top-of-the-line dual processor upgrade — the Encore/ST G4 Duet 1.8 GHz — for most “Sawtooth” Power Mac G4 systems, including AGP Graphics, Gigabit Ethernet, Digital Audio and QuickSilver models. The company says this product “represents a new high point in performance and value in Sonnet’s most popular line of processor upgrades; it is priced the same as the 1.7 GHz dual processor upgrade it replaces.” The Encore/ST G4 Duet 1.8 GHz is available now for a suggested retail price of US$599.95.