15 Ways to Extend Laptop Battery Life - Page 2

jmke · 9th July 2007, 09:12

Quote:

Originally Posted by jmke

find me a laptop which allows vcore control

Thank you for the info

Only laptops I've used for more than 4 hours are a Compaq Celeron 2Ghz and IBM Pentium 4 1.5Ghz; neither one required me to look into lowering power usage, as I was using them hooked up to power outlet 100% of the time.

Sidney · 9th July 2007, 15:09

The software shows no difference in setting than what my laptop already provided. For the dual core T2060 lowest CPU voltage is 1.025 remains unchanged.

I believe what it does is to lower the 1.215 volt at highest multi (cpu default) and see if it runs stable. So, if any battery saving, it is at high performance defeating the purpose.

9th July 2007, 16:16

Quote:

Originally Posted by lazyman

The software shows no difference in setting than what my laptop already provided. For the dual core T2060 lowest CPU voltage is 1.025 remains unchanged.

I believe what it does is to lower the 1.215 volt at highest multi (cpu default) and see if it runs stable. So, if any battery saving, it is at high performance defeating the purpose.

The power saving is over the whole range of multipliers, but it's greatest at max speed. Generated heat is a lot lower so the fan needs to run a lot less (= less energy

).
Vista can also set the energy level of WiFi cards.
Max. battery life is all about small details

Sidney · 9th July 2007, 16:28

Surely, if I want to stay at Starbuck outdoor in hot summer day for another hour longer because I want to look at the pretty half naked girl sitting next to me, either I switch the laptop at power saving mode and careless about high power setting at lower CPU volt

There is no need for max power mode just for browsing the internet. I don't doubt the ability of the software.

I was able to use mine for about 4 hours as is. However, I am not quite sure lowering 0.05 volt on every step of multi will benefit much since the lowest CPU volt remains unchanged in my case.

Sidney · 9th July 2007, 19:02

Testing and looking for lowest CPU voltage high performance setting. Will post some photos later.

Sidney · 9th July 2007, 19:50

Convinced
Lower to 1.1 from 1.215, >9%

9th July 2007, 22:00

Exactly.

Speedstep has lower voltage settings available that it does not use, but NHC will allow the user to select. In this way it will work on any Intel Speedstep or Enhanced Speedstep capable CPU, regardless of laptop brand.

Pentium M 2.13MHz

Default
16x @ 1.356v ~73c
6x @ 0.998v

Modified
16x @ 1.180v ~56c
6x @ 0.700v ~35c

I had to re create my NHC profile, so I just retested the above. Huge difference in battery life & temps, not to mention the fans are again silent.

Gamer · 9th July 2007, 22:08

Notebook hardware control is a great tool to undervolt your CPU

Ask me...

9th July 2007, 15:09	#12
Sidney Member Join Date: Mar 2004 Posts: 15,738	The software shows no difference in setting than what my laptop already provided. For the dual core T2060 lowest CPU voltage is 1.025 remains unchanged. I believe what it does is to lower the 1.215 volt at highest multi (cpu default) and see if it runs stable. So, if any battery saving, it is at high performance defeating the purpose. __________________ lazyman Opteron 165 (2) @2.85 1.42 vcore AMD Stock HSF + Chill Vent II

9th July 2007, 16:28	#14
Sidney Member Join Date: Mar 2004 Posts: 15,738	Surely, if I want to stay at Starbuck outdoor in hot summer day for another hour longer because I want to look at the pretty half naked girl sitting next to me, either I switch the laptop at power saving mode and careless about high power setting at lower CPU volt There is no need for max power mode just for browsing the internet. I don't doubt the ability of the software. I was able to use mine for about 4 hours as is. However, I am not quite sure lowering 0.05 volt on every step of multi will benefit much since the lowest CPU volt remains unchanged in my case. __________________ lazyman Opteron 165 (2) @2.85 1.42 vcore AMD Stock HSF + Chill Vent II

9th July 2007, 19:02	#15
Sidney Member Join Date: Mar 2004 Posts: 15,738	Testing and looking for lowest CPU voltage high performance setting. Will post some photos later. __________________ lazyman Opteron 165 (2) @2.85 1.42 vcore AMD Stock HSF + Chill Vent II

9th July 2007, 19:50	#16
Sidney Member Join Date: Mar 2004 Posts: 15,738	Convinced Lower to 1.1 from 1.215, >9% __________________ lazyman Opteron 165 (2) @2.85 1.42 vcore AMD Stock HSF + Chill Vent II

9th July 2007, 22:08	#18
Gamer [M] Reviewer Join Date: May 2002 Posts: 4,587	Notebook hardware control is a great tool to undervolt your CPU Ask me... __________________

9th July 2007, 22:00	#17
Kougar Posts: n/a	Exactly. Speedstep has lower voltage settings available that it does not use, but NHC will allow the user to select. In this way it will work on any Intel Speedstep or Enhanced Speedstep capable CPU, regardless of laptop brand. Pentium M 2.13MHz Default 16x @ 1.356v ~73c 6x @ 0.998v Modified 16x @ 1.180v ~56c 6x @ 0.700v ~35c I had to re create my NHC profile, so I just retested the above. Huge difference in battery life & temps, not to mention the fans are again silent.

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