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I need to undervolt my Z70va (URGENT)

post #1 of 26
11/27/05 at 9:21am
Thread Starter 
I'm going on a flight tomorrow and its going to last about 17h the whole jurney and I need my laptop to last the longest possible time. I will dim the screen and run at 6x but i need to undervolt it, but i dont know how low i can go. Specs in my sig, please help me, i only got a couple hours.
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post #2 of 26
11/27/05 at 12:21pm
If u payed attention to ur last thread, someone replied saying to use RMClock.
Do so.
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post #3 of 26
11/27/05 at 12:33pm
Thread Starter 
Quote:
Originally Posted by adinu
If u payed attention to ur last thread, someone replied saying to use RMClock.
Do so.

If you would pay attention to the other thread you would know im not talking about the same thing, so next time do so.

Undervoltiong and underclocking is 2 different things.
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post #4 of 26
11/27/05 at 1:07pm
I like to use Notebook Hardware Control for undervolting. http://www.pbus-167.com/chc_guid.htm
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post #5 of 26
11/27/05 at 1:09pm
Just use CHC. CPU Voltage tab. Check only 6x. Set it to .700V (you should probably be stable, if not, just up it a little). In ATI CCC, you also want to set your PowerPlay settings to full battery mode. That will reduce power consumption from the x700. Also turn off your wireless.

Don't expect any more than 4 hours from this. The most battery life I've seen (projected at least) on my z70va doing all of these things except turning off the wireless, was 3:45.

Good luck!
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post #6 of 26
11/27/05 at 3:41pm
Yes, but rm clock does both underclock and undervolt...
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post #7 of 26
11/27/05 at 3:47pm
They do just about the same thing. Artek, you can just hope onto the Asus forum or do a search on "CHC", I think it's "NHC" now, but there's plenty of threads on CHC before they changed their name. Other fellow users of the Z70VA posted some of their settings, but I assure you, it'll work straight off the bat. So if you're unsure or hesitant to alter the settings, you dont have to. You'll see the changes immediately after installation.
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post #8 of 26
11/27/05 at 7:44pm
The only meaningful way you'll get more battery life is to get more batteries. The difference in power usage of a Dothan at 800Mhz/.988v and 800Mhz/0.7v is dwarfed by the power consumption of the rest of the laptop's components. You'll only get a few more tens of minutes.
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post #9 of 26
11/27/05 at 8:59pm
Aren't you 15? Don't you have school?

BTW I feel your pain.. I'm going take a trip to China in the summer and the flight is 16H.
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post #10 of 26
11/27/05 at 9:37pm
Before you start undervoltage, keep in mind one thing. Don't expect it to increase your battery life by A LOT. You might get 10% - 15% being average.

I would suggest you get an extended battery or battery for the optical bay.
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post #11 of 26
11/28/05 at 12:46am
rmclock does undervolt. i prefer it to chc, but chc gives me temp on the toolbar and battery info so thats kind of a nice thing to have.
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post #12 of 26
11/28/05 at 3:21pm
Ya, I've got an extra battery for mine. It's well worth the extra $90. I would defnitely recommend it if you use your laptop on battery for longer than 3:30 hours in one sitting.

As far as battery life with undervolting, mine's at 0.700 for 6x, and the longest I've stretched it to is 4:30 hours. However, that's with the screen on the second most dim setting, video card underclocked, wireless and bluetooth off, and only typing in Word for the entire time (it was a paper that was due the next day lol). Under normal use, I can get about 3:00 to 3:30 hours of battery life. This is with wireless on, screen at about 3/4 to full brightness, video card at full clock, and possibly playing music with iTunes.
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post #13 of 26
11/28/05 at 3:39pm
Quote:
Originally Posted by StrikerTek
Ya, I've got an extra battery for mine. It's well worth the extra $90. I would defnitely recommend it if you use your laptop on battery for longer than 3:30 hours in one sitting.
I heartily agree. My extra battery has proved indispensable.
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post #14 of 26
11/28/05 at 6:52pm
You could also run the laptop without the optical drive to squeeze some more life out of the batteries if your not going to be using it.
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post #15 of 26
11/28/05 at 10:30pm
To squeeze the utmost battery life out of your machine... you must:
1) Run without an optical drive
2) Undervolt your CPU and underclock/undervolt your GPU
3) Use 1 stick of RAM
4) Dim the screen to as low as possible while still being usable
5) Turn off all unnecessary hardware (Bluetooth, infrared, WLAN)

However...the best thing to do is just buy a second battery.
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post #16 of 26
11/29/05 at 4:50am
Anyone have the voltage numbers for undervolting a Pentium M 740 (1.73)using CHC on a Z70va? I am not looking for a massive undervolt, but a stable one that will give me a little more battery life. I checked other threads but could not find numbers for a 740.

Thanks!
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post #17 of 26
11/29/05 at 4:53am
each individual processor is slightly different, which is why Intel puts in the buffer voltage in the first place. You just need to do some experimenting.
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post #18 of 26
11/29/05 at 12:14pm
uuuuuh may be a dumb sugestion but why not buy an "air ac adapter"??
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post #19 of 26
11/29/05 at 1:16pm
You guys only get ~3:45?

I run 6x @ .700v, powerplay battery, and a dimmed screen and I can get 4:15 easily.
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post #20 of 26
11/29/05 at 1:36pm
Well it also depends on the brightness of the screen and the amount of processing. Some tasks that may use the CD-rom or heavy computing can lower your usage time.
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