News for hackers. Stuff that matters.
Re:The New MacBook Pro: Unfixable, Unhackable, Untenable by bnegreve on Friday June 15, 2012 @10:36AM (#4116687)
It's also because the power consumption is quadratic with the frequency. This is important if you agree that an additional hour on battery is worth much more than few cylces per sec.
Re:The New MacBook Pro: Unfixable, Unhackable, Untenable by Dave_Rosenthal on Friday June 15, 2012 @12:34PM (#4117324)
No, the first-order model is that power consumption is quadratic with voltage, and linear with frequency.
Re:The New MacBook Pro: Unfixable, Unhackable, Untenable by bnegreve on Sunday June 17, 2012 @03:01PM (#4123546)
Ok, but isn’t increasing the voltage required to keep the transistors stable as you increase the frequency ?
Re:The New MacBook Pro: Unfixable, Unhackable, Untenable by Karunamon on Friday June 15, 2012 @04:41PM (#4118611)
That's kind of irrelevant anyways, all modern CPU's have speed stepping functionality that can reduce the clock speed while on battery.
Re:The New MacBook Pro: Unfixable, Unhackable, Untenable by gcb on Friday June 15, 2012 @11:06AM (#4116859)
That's why your cpu runs on different paths to save power when not needed. Using a lower cpu is just lazy and cheap.