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But the kicker for IBM and its customers is that the PowerPC 970FX is a one-size-fits-all architecture that accommodates servers as well as notebooks.
"The portable-space specs that are out there talk about 15 to 30 watts for maximum power. We want to be inside that envelope," Rohrer said. "The low-frequency operating conditions in the idle state?nap?are in the 1- to 2-watt range."
That will mean that any G5 notebooks will likely be clocked somewhat lower than the current G5 desktops.
In one hypothetical example of a low-power state, Rohrer said a PowerPC 970FX in the 1/64 "deep nap" state could run at 30MHz, which would equate to about 1.9GHz in full-speed mode. Apple's shipping dual-processor G5 desktops range in speed from 1.8GHz to 2.5GHz.
"That's the whole intention of this, to make it usable in low-end servers ... down into portables," Rohrer said. "To do that, you can't start with high voltage and high frequency; you can't hit 50 watts. You've got to start with a lower voltage and lower frequency and [then] adjust the voltage and drop the frequency."
But the kicker for IBM and its customers is that the PowerPC 970FX is a one-size-fits-all architecture that accommodates servers as well as notebooks.
"The portable-space specs that are out there talk about 15 to 30 watts for maximum power. We want to be inside that envelope," Rohrer said. "The low-frequency operating conditions in the idle state?nap?are in the 1- to 2-watt range."
That will mean that any G5 notebooks will likely be clocked somewhat lower than the current G5 desktops.
In one hypothetical example of a low-power state, Rohrer said a PowerPC 970FX in the 1/64 "deep nap" state could run at 30MHz, which would equate to about 1.9GHz in full-speed mode. Apple's shipping dual-processor G5 desktops range in speed from 1.8GHz to 2.5GHz.
"That's the whole intention of this, to make it usable in low-end servers ... down into portables," Rohrer said. "To do that, you can't start with high voltage and high frequency; you can't hit 50 watts. You've got to start with a lower voltage and lower frequency and [then] adjust the voltage and drop the frequency."
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