Sonnet Technologies today announced two new additions to the Encore/ST family–the Encore/ST G4 1.7GHz processor upgrade for most “Sawtooth” G4 Power Mac systems, including AGP Graphics, Gigabit Ethernet, Digital Audio and QuickSilver (2001 and 2002) machines; and the Encore/ST G4 1.7GHz upgrade made specifically for the Power Mac G4 Cube. These cards are based on the latest PowerPC G4 processor (used in Appleā€™s current PowerBook line) from Freescale Semiconductor (formerly a division of Motorola), and feature 512K of on-chip L2 cache. Both upgrades are priced at US$499.95. The rest of the Encore/ST G4 single processor upgrades have been reduced in price from $20 to $100.