maemo.org - Talk - View Single Post - overclocking,,it is dangerous??

freemangordon	2011-10-20 , 13:12
Posts: 3,074 \| Thanked: 12,964 times \| Joined on Mar 2010 @ Sofia,Bulgaria	#35

@iDont - it is obvious that runnning CPU constantly on higher frequency will increase average current (which is what bq27x00_battery measures). But average current is not the same as peak current, which is the one responsible for EM. And running syntetical benchmarks has nothing to do with real life usage patterns.

A higher clockspeed with substantially lower voltages required a lot more current from the battery than a lower clockspeed with substantially higher voltages.
Setting a lower or higher voltage for the same frequency didn't nearly affect the used current as much as setting a lower or higher frequency.
This is with SmartReflex turned off in software.

I really hope you can find your tables (or someone to do measurements again) to see how voltage affects current, because quantities as "lower" and "higher" may work in fuzzy logic, but won't work here.

Re Smartreflex - I am in process of educating myself about that technology and kernel support for it. So far it seems that it CAN be turned off, just not sure if setting sr_vdd1 and sr_vdd2 to zero is enough.

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