The Power Macintosh 9600, released in February 1997, became Apple's fastest 60x-Power Macintosh at the time. The debut in February 1997 saw the birth of three versions: two single-CPU models, one running at 200 MHz and 233 MHz, and a multiprocessor model with two PowerPC 604e chips, each clocking at 200 MHz. In August 1997, Apple released a speedbump that also included a full megabyte of in-line cache connected to the CPU along a special high-speed connector that transfers dat at 100 MHz instead of 50 MHz -- twice the speed. The new models came in speeds of 300 MHz and 350 MHz.