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<p> The PowerPC 603 incorporates a variety of features to reduce power dissipation: dynamic idle-time shutdown of separate execution units, low-power cache design, and power considerations for standard cells, data-path elements, and clocking. System-level features include three software-programmable static power management modes and a hardware-programmable phase-lock loop. Operating at 80 MHz, the 603 typically dissipates 2.2 W, while achieving an estimated 75 Specint92 and 85 Specfp92.</p>
Sonya Gary, Hector Sanchez, Pete Ippolito, Carl Dietz, Jim Eno, Gianfranco Gerosa, "PowerPC 603, A Microprocessor for Portable Computers", IEEE Design & Test of Computers, vol. 11, no. , pp. 14-23, October/December 1994, doi:10.1109/54.329447
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