Dell :: Undervolting My M4400

Dec 23, 2009

I want to undervolt my Presicion M4400 as per this guide:
The "Undervolting" Guide

A few questions as I embark!

1) Does it matter how much power my M4400 draws when I do this? That is if I later attach USB drives, add a 2nd hardrive to optical bay, should I take these into account? I assume no but just checking.

2) After doing the first stress test I got max temps of 76C on CPU, after lowering the max 10.0 multiplier voltage and running it for 10 min I got max temps of 79C. Something must be wrong?

In RMClock's CPU info page (see pic. 1) the "current" 10.0x multiplier reads 1.1250V when Im doing the stress test although I've set the 10.0 multiplier to 1.1500V (default max is 1.2500V) on the profile page (see pic 2).

Shouldn't the read outs correspond with the set max voltage? Also on the RMClock CPU info page (see pic. 1) the "maximal" 10.0x readout is 1.2500V which is again different from the set 1.1500V.

Is this normal or have the setting not been saved or something?

3) On the advanced CPU settings page my thermal monitoring is not checked (see pic 3) this differs from the Undervolting guide screenshots and is not specified if these should be on?

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Feb 14, 2009

Does anyone here use RM Clock to undervolt their CPU's for better battery life and production of less heat with regards to the CPU.
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T8300 CPU

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Jan 28, 2009

ive got a xps m1530, with a t5550 processor.

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Can i contact them and a get a replace?

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Sony :: Undervolting Core I7 On Z11

May 8, 2010

First things first: The new Z is the best laptop I've owned so far. End of story. Had MBP, MBA, AW m15x and several Dells, but nothing like this.

Second:
Im not a big fan of hardware overclocking/undervolting (anymore). (Referring to the "Insyde hacking" thread.)

Ok, with that in mind; how do I software undervolt the mobile core i7 processor?

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Following the excellent flipfire's undervolting guide and inspired by Silvr6's experience with undervolting his dv2, I decided to give it a try and...I was able to increase the battery lifetime from almost shameful 2h 25 minutes to 3h 30 minutes for mpeg 2 play, or even to 4h 20 minutes (light browsing and lots of reading). So, you get at least 25-30% more battery lifetime. This makes me like my dv2 a lot more!

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Dell :: M4400 AS5

Nov 18, 2008

First take the battery out and remove the bottom part like so.

Then you have to take the fan off there are 3 screws to take out and unplug the fan connector.

After you take out the CPU heat sink "there is 4 screws".

Then the Video card heat sink 3 screws.

Once that is done I took the CPU out you don't have to take it out I just wanted to see it. You do have to take out all the extra thermal past from DELL from the CPU and GPU and the 2 heat sink like so.

I use a plastic card and paper towel to remove the extra paste and it workes grate.

Now for the AS5 put on each of the components you just clean as in the CPU and GPU and the 2 heat sink like so.

same go's for the CPU and GPU then jsut use a falt plastic card I just use a master card but any thing similer will do to even out the SA5 like don't try to get it all nice and flat just make sure it covers all the surface of contact of the CPU GPU and heatsink and you should be good, it soule look like that now.

Now just re insert the GPU heat sink and tight the 3 screws back.

After it's the CPU heatsink and it's 4 screws like so.

Now the fan 3 screws and one connoctor.

Close it all up and boot Hope it helps some of you.

Mine was 55 and idle and now 49/50.

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Considering that this is a "heavy duty" notebook, how much would a 25W processor (e.g., P9600) increase battery life and decrease heat? In my experience, the difference has been very little for relatively similar notebooks.

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Jun 28, 2009

I am considering buying a Precision M4400 but I've read about various audio problems, even with the audio outputs .....

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Jun 10, 2009

I'm currently trying to decide between the M4400 and the HP 8530W. Please could any M4400 owners let me know their thoughts (happy or otherwise)?

The basic specs are as follows:

Dell: P8600 CPU, 4GB RAM, 160GB 7200rpm HDD, Quadro 770M, 1920x1200 display, 6-cell battery.
HP: T9400 CPU, 2GB RAM, 160GB 7200rpm HDD, Quadro 770M, 1680x1050, 8-cell battery.

They're about the same price where I live, and both have a similar lead time. I've had no major problems with Dell in the past, but the M4400 seems to have been slated here and elsewhere for its build quality and design issues. The HP is by no means immune, but it does seem to come off lighter .....

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When I got my M4400 last week, it had Vista Business installed - wasn't bad and unlike most people, I've NEVER had issues with Vista Anyway being a Microsoft Gold customer, I got my hands on the Windows 7 Ultimate RTM version and installed this on the laptop.

It has transformed the laptop just like it did my PCMUCH quicker, the graphics seem a lot happier in W7 too.

I've installed all my other tools such as SQL2008, Office 07, Virtual PC with VMs, VS 2008 etc etc but it doesnt even flinch under pressure.

If you are happy with M4400 and Vista, you will be even happier with W7 - small mini review but I thought I should give you my quick thoughts on it.

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Dell :: M4400 Users:

Mar 2, 2009

what kind of battery life you're getting from your M4400, with specifics...

list down your spec, which battery you have, and what programs you were running..

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