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Z70va + Help w/ CHC

post #1 of 15
9/30/05 at 11:13pm
Thread Starter 
ok everyone, I need help...

So I received my Z70va 1.5 weeks ago and love it. There are a few things that I've noticed though. Most of the time, I leave my laptop plugged in. I might have unplugged it once. Anyhow, say I've got iTunes open. If I drag the scroll bar up and down, I hear a pretty audible buzzing coming from the center of the keyboard, maybe center left. Also, when I unplugged my laptop, it was doing the same sound, even when it was just idling.

Secondly, I've noticed that my battery life is usually around 2hrs 30min. What's the deal?

As for CHC, how do I use it? I dl'd it and installed it, but I have no idea what to do with it. In the CPU Speed, should I set the AC & Battery modes to Dynamic Switching? Max Performance? What is custom dynamic switching, and what should I set things to? How about the CPU Voltage settings? I have no idea what I'm doing. Before downloading CHC, I usually run around 66C when surfing the net and listening to iTunes on AC power. Is that good/bad? BTW, the specs of my z70va are: 2.0ghz, 1gb ram, 80gb Seagate. I don't think anything else is pertinent information.

Any help at all would be appreciated.

`John
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post #2 of 15
9/30/05 at 11:22pm
Umm try update the on-board audio driver update/reinstall i-tunes.

About the CHC, try speedswitch. I think it is simple to use.
http://www.diefer.de/speedswitchxp/

If you have it on Max Performance, your laptop will run at full (100%) speed 100% of the time.
if you use dynamic, your laptop will adjust the speed accordly. Like depends whether more CPU is needed, if so, the laptop will auto adjust the speed.
Use 'battery optimized' while on battery. It will lock your CPU at 600mhz and lower your FBS so there for, it is better than 'max battery'.
'Max battery' is kind of like 'dynamic switching' depends on how much battery power is left.

i'd say to use 'dynamic switching' on AC, and use 'battery optimized' on battery.
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post #3 of 15
10/1/05 at 10:32am
It's hard to predict the best voltages when you undervolt, because every CPU is slightly different. This thread: http://www.notebookforums.com/showthread.php?t=70943 has just about all the information anyone on the forum has discovered about undervolting. Enjoy!
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post #4 of 15
10/1/05 at 12:09pm
You can play with your voltages, Its not to tough to get your minimal voltage down to 0.700. I got my 2.0 z71v to it. It helps battery alot.
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post #5 of 15
10/1/05 at 12:46pm
That buzzing is coming from the MRX700. When you use a DirectDraw heavily (try moving a window around really fast for a while... or scroll on itunes) you heat up the graphics card and cause the fan to run.

There are multiple solutions for this problem. If you want the buzzing to go away completely, your best bet is to turn off all hardware acceleration and underclock your video card.

I run nicely at an undervolted 800mhz (dynamic switching on AC, 800mhz only on battery) with the said tweaks above, and half of the time I can't even hear the fans in my very quiet basement.

When I play HL2, though, things get loud. But that's very OK, since noise isn't a problem during games.

After some tweaking, I get about 3.5-4 hours of battery life here. Dimming the LCD helps a ton.
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post #6 of 15
10/1/05 at 4:44pm
I have the same buzzing problem as you, haven't found a solution yet and I must say it's quite annoying. Actually I belive it's coming from the chipset, since if you run Prime95 middle-option torture test you'll probably have the same buzzing sound. The buzzing is NOT caused by the fan. It is a high-pitched electrical whine caused by some component inside.
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post #7 of 15
10/1/05 at 6:46pm
My fault, then. I don't notice/have the problem you are refering to. The only thing that could be called "Buzzing" is the VGA fan. Chipset, you say? I don't think that makes sense... is there a third fan in this thing? Electrical components don't usually make noise unless they're borked.
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post #8 of 15
10/2/05 at 9:52pm
Thread Starter 
I set it to Dynamic Switching and it still does the buzzing....this is so irritating!
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post #9 of 15
10/5/05 at 6:50am
Thread Starter 
ok wtf...so I'm done setting up CHC. I put it to Dynamic Switching on AC and Max Battery when on battery. I set a 6x multiplier at .716 and a 14x at 1.100. Occasionally, out of no where, my computer will crash and reboot. It just did it right now while surfing and listening to iTunes. Did I set this shit up wrong? Oh, my power scheme is on Portable/Laptop. Help me please.
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post #10 of 15
10/5/05 at 10:20am
You set your voltages a little too low. Bump them up a notch or two until it doesn't happen anymore. When you hit that point, you've found the lowest voltages you can successfully use. Remember that all CPUs require slightly different voltages. For instance, mine needs .748v on 6x up to 1.068v at 14x
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post #11 of 15
10/5/05 at 2:45pm
It's not a physical noise of "buzzing". It's an electrical noise of some sort. I've been told it's the i915 chipset itself. I don't know if that's true, it could be a borked electrical component. Whatever the case, it's there, I can hear it too, when scrolling (incidentally I can also hear it when stressing the machine - the 2nd torture test in prime95 will also cause it, the scrolling buzz seems more random).

I agree, it's annoying as hell.
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post #12 of 15
10/20/05 at 5:48am
Thread Starter 
ok so, I dl'd the new Notebook Hardware Control 1.9 Beta 03 - Personal Edition. Anyhow, while on AC I have it set to Dynamic Switching. Under CPU Voltage, I set the first one to 6 @ .700v and the next one to 15 @ 1.164v. So, I have the icon in my Taskbar, and it normally runs at 800mhz (6x & .700v), which is cool. However, I'll notice that when it switches, it sometimes goes to like 1.03ghz (somewhere around there), or sometimes when it goes to 2.0ghz, it goes to 1.356v instead of mky 1.164v that I set. Why is that?
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post #13 of 15
10/20/05 at 1:11pm
that noise comes from the usb port, go to device manager , usb controllers, then with the main controllers: switch off the 'energy saving modes' at the properties screen. then switch them on one by one to find out which one is making the sound, it was only one for me so that one i have switched off. no more problems!
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post #14 of 15
10/20/05 at 3:23pm
I tried that on mine, it didn't help with the buzzing I have. I guess I can try it again.
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post #15 of 15
10/20/05 at 3:25pm
Quote:
Originally Posted by Dem1K
ok so, I dl'd the new Notebook Hardware Control 1.9 Beta 03 - Personal Edition. Anyhow, while on AC I have it set to Dynamic Switching. Under CPU Voltage, I set the first one to 6 @ .700v and the next one to 15 @ 1.164v. So, I have the icon in my Taskbar, and it normally runs at 800mhz (6x & .700v), which is cool. However, I'll notice that when it switches, it sometimes goes to like 1.03ghz (somewhere around there), or sometimes when it goes to 2.0ghz, it goes to 1.356v instead of mky 1.164v that I set. Why is that?
speedstep has intermittent intervals - it's not a start and finish kind of scenario. CHC allows you to specify the voltage of each multiplier - you can try that out.

Also your battery life question - on battery try setting your power options for ATI to max power. At first I had about 2.5 hrs bat too but after changing to max bat, I've been able to run around 4 hours.
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