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Underclocking/undervolting/adjusting throttling for laptop CPU and GPU

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  • Laptops
  • GPUs
  • CPUs
  • Components
Last response: in Components
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August 31, 2013 8:27:47 PM

Hi folks, I have a hypothetical situation and a few questions to follow up.

Let's say I'm looking around for a new laptop but the particular model that appeals to me (which packs an i7-4700MQ and a GTX 765M) seems to have problems with heat management and battery life according to reviews. Suppose I buy it regardless but I wish to improve these issues by underclocking, undervolting and adjusting throttling for both the CPU and GPU.

1. Would any of these methods prove successful in reducing heat generated by my laptop's CPU and GPU? Would the results be significant or negligible?

2. Would any of these methods prove successful in prolonging battery life for my laptop? Would the results be significant or negligible?

3. If none of these approaches work, is there any alternatives (besides using a cooling pad or applying an aftermarket thermal compound)?

Thank you kindly.

More about : underclocking undervolting adjusting throttling laptop cpu gpu

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August 31, 2013 8:54:08 PM

Of course it would be significant bro. When you undervolt it, it would logically consume less power, it would extend your battery life for more than an hour I believe. And it would produce way less heat. And you can buy a heat pad to keep it super cool.
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September 1, 2013 12:09:18 AM

An extra hour of battery life would do wonders but how much underclocking/undervolting would be required to reach that point and what should I expect in regards to temperature reduction?

Also, is it possible to manually set the temperature at which the CPU and GPU will automatically throttle down so they never reach that mark? For example, could I force the CPU and GPU to adjust by decreasing their performance so that they never surpass say 70 °C?

Thanks again.
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a b à CPUs
September 1, 2013 2:33:13 AM

In the past, I've undervolted a Phenom II laptop. It was well worth the time as reduced heat and slightly longer battery life proved to be a blessing.

However, you must keep in mind that not all laptops support such tools. If you are confident the particular model is able to run such tools, then by all means, spend a day or so to tweak the voltage.
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a b à CPUs
September 1, 2013 7:08:53 AM

Some have the capabilities to do that, but on a desktop unit. I don't know if mobos have those features now. You can always TRY to undervolt the CPU to 1.1 to 1.2v at stock speed, for intel of course, AMD is a different story. For the GPU of a laptop, the only thing you can adjust there, I GUESS, is the core clock and memory clock. I'll bet the voltage controller is locked.
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