UnPlugging Cuts Performance In Half

For some reason when I unplug the notebook the performance cuts in half. All battery settings (In Vista and in AlienFusinon) are set to high/max performance when battery is unplugged. Any idea what could be going on?

I have the latest (From Alienware) drivers for the graphics card also.

 

I have same issue with power mizer turned off aswell. (though I use XP and a Dell)

 

How did you arrive to this conclusion?

I don't notice any difference with battery setting to high performance, stealth mode off.

 

Well I called tech support. They said it was I have the 8700gt. My latest BIOS version is X27 (for that card). They said this is what this card is going to do and there *might* be an update for the BIOS out to change that soon. The tech confirmed it with a few other including a level 2 tech, so I guess that's what it is. The card I purchased.

 

thats normal. the video card cannot run at full power on battery. if it did run at full power your battery life would be extremely low. if you want the video card to run at full clocks the laptop needs to be plugged in. this is the same as other laptops such as the dell m1730.

 

Ok thanks exiled! +1 Rep for the info!

 

This isn't new either, my 3 year old Dell XPS Gen2 does the same. Battery rated at 80watts, mains adapter rated at 130watts. The battery would have to be huge to match the output from the mains adapter. The Dell 1730 and the M17x both use 230watt mains adapters. Battery technology just isn't keeping up with notebook performance.

 

Yea all laptops automatically downclock when you unplug them. For example, on the M9750, when you unplug it, it only uses one of the 7950GTX cards which is bad but good at the same time.

 

I just then don't see the use of "Stealth Mode", since unplugging it already cuts the performance and everything in half. Stealth mode for me does not have any effect.

 

Well I'm guessing stealth mode limits the CPU use. For example in Windows Vista you can limit your CPU use to 50% while unplugged so that your CPU doesn't do as much work. I'm guessing stealth lowers clocks even more or something like that.

 

stealth mode is silent aswell.

 

as said above most laptops performance goes down when you unplug how ever if you download Notebook hardware control you can change this or atleast i can on my 2 year old sony.

 

if you have xp go to the control panel then go to the nvidia control panel and try turning off powermizer. if you have vista you cant turn off powermizer so if you want to game you will need to plug it in unless you want to run maple story or play on lower settings

 

Hello,I've got problem with my Powre Plans
When I disconnect AC adapter laptop goes automatically to the stealh mode(in the High preformance and power saver) however touch button of stealth mode doesnt light but timing of cpu,ram and graphic card going down.I would like work with m15x on max. performance on battery as well.
Does anybody know how to fix it this problems?

 

Let me know if you ever find a fix for this because im having the same problem.

Scrog-

 

it must be something with AW because I have 2 toshiba laptops and I dont have any problems like this one.

 

so, there isn't any chance to run m15x in max performance on the battery?

 

Nope its not possible because the 8800gtx on full throttle drains more than the battery can deliver...

 

This happens with all laptops. Your tosh's GPU/CPUs will also slow down when not plugged into AC.

 

I'm going to be buying the auto adapter on AW's website, and hopefully an external battery so that I can still get my game on when I'm not near an outlet.

 

thats not going to work. no matter what you do as long as its unplugged the 8800 will stay downclocked. the only way is to plug it in.

 

External batteries act almost like a wireless outlet so to speak. They plug into the laptop's power adapter port, so the laptop "thinks" it's plugged in (in other words, it will show that you're plugged in in the system tray). Once the external battery runs out of juice though, you're stuck with your laptop's own battery, in which case you will no longer have the benefits of being plugged in.

 

arent those things a bit expensive.

 

Here is one: http://www.amazon.com/Lenmar-PPU161...1?ie=UTF8&s=electronics&qid=1211156998&sr=8-1
This one is $93 and lasts around 3 hours depending on the laptop.

 

You just have to make sure it meets the power output requirements of the m15x (19V 6.3A I believe).
And yes, they can get pretty expensive (the larger ones run upwards of $300).

 

We'll the one above can take a power output of up to 20v.

 

That it can, but it's a tiny model (48.8WH). With a demanding computer like the m15x, that won't get you too far. Some of the expensive one's I've seen go up to 160Wh.

 

The m15x will need a 120W adapter (6.3 x 19)

 

You don't need any sort of adapter, the external battery matches the output of the m15x's power adapter, so it's just like having it plugged in.
(as far as I know)

 

Oh sorry what I meant was that the external battery should be able to deliver 120W of power

 

Ah, I see

 

Yeah so, while you don't have to get the 160W model you mentioned, you definitely need a lot more than the 48.8W shown there

 

Sorry just something I found didn't look at specs or anything.

 

yeah yeah it's cool, I'm just letting him know exactly what he needs when he buys

 

Ah, your're mistaken. Those are Watt hours (Wh), not watts (W). It's a measurement of work, whereas the watt is a measurement of power. So, the total amount of work that this battery can do is 48.8Wh. It's basically a measurement of capacity. The higher the Wh, the more run time your're going to get out of it.

 

Sorry, you're right I missed the h. That said, even though something may have 160Wh, that doesn't mean it can actually deliver 160W (its max output may still be, say, 40W), so you'll still need to make sure whatever you get delivers 120W

 

Yes, that's true. It's hard to find a compatible battery because a lot of research needs to be done, but I'm sure there are some out there.

 

yep, you just want to be careful, especially because of the potential damage that can be done

 

Hehe, yah, you don't want any explosions...

An overheating battery is not a nice thing

 

actually an overheating battery does make a nice fire work

 

Ya, finding an external battery capable of outputting 120W or more is not going to be easy.

'Course this should work...