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Started by Agera One | | 11 answers
Laptop undervolting help
I have a Sony VAIO VPCEB34EN laptop with i3-370M @ 2.4 GHz Processor. I replaced my worn out battery with a new one. The old and current battery both have the same battery life of 2 hours only. I mainly do browsing or movie watching (three USB ports are connected with mouse, keyboard and data card/dongle always). So, I want to underclock my CPU as much as possible without affecting performance to gain battery life. Can anybody guide me through the whole process, as I never did any overclocking/underclocking in my life? Also, list the gains/losses I'll have after underclocking.
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a b D Laptop
a b K Overclocking
a b à CPUs
October 14, 2014 10:29:36 AM

I understand. But you can't undervolt that system.
a b à CPUs
October 14, 2014 12:43:37 AM

That is why I asked about undervolting..
a b D Laptop
a b K Overclocking
a b à CPUs
October 14, 2014 12:13:54 AM

Agera One said:
Such info, much thanks :D 
I try as much as to save power because of 1st gen CPUs are not that power efficient and my discharge rates are always around 20 W..


I understand, they definitely are known to suck a battery dry in no time especially if the fans are running full bore.
a b à CPUs
October 13, 2014 11:52:39 PM

Edited my last answer
a b D Laptop
a b K Overclocking
a b à CPUs
October 13, 2014 11:51:26 PM

No problem. Anytime.
a b à CPUs
October 13, 2014 11:50:55 PM

Such info, much thanks :D 
I try as much as to save power because of 1st gen CPUs are not that power efficient and my discharge rates are always around 20 W..

Best solution chosen by Agera One

a b D Laptop
a b K Overclocking
a b à CPUs
October 13, 2014 11:44:54 PM

Correct. And while connected to your AC power source, active would be better.
a b à CPUs
October 13, 2014 11:40:46 PM

So, for performance systems/laptops (not mine), active would be better than passive and for power concerning laptops, passive would be better than active, right?
a b D Laptop
a b K Overclocking
a b à CPUs
October 13, 2014 11:37:00 PM

With passive settings, the CPU voltage and multiplier are reduced before fan speed is increased to max in the event that the CPU begins to approach "hot". With active settings the fan will go full speed before the system makes reductions in CPU settings. Any time the fan is full on, the battery is quickly draining, unless connected to AC power. These settings can be set differently for when you're on battery or AC power as well since when on AC power, consumption isn't as much of a factor.
a b à CPUs
October 13, 2014 11:29:00 PM

Great. What are Passive and active settings? (I only browse internet/watch movies)

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