Undervolting my HP dv6 1341eo

Hello everyone

I have a HP dv6 1341eo laptop that I tried undervolting today by following this guide: http://forum.notebookreview.com/har...arket-upgrades/235824-undervolting-guide.html.

Some important specs:
CPU: Intel Mobile Core 2 Duo T6600 @2.20GHz (stock)
RAM: 4GB DDR3 6-6-6-15
Video Card: ATI Mobility Radeon HD 4650
Mobo: Hewlett-Packard 3628 (Intel Chipset)

Using the guide mentioned above, I was able to reduce the voltage at the highest multiplier (x11) from 1.1500V to 1.0000V. This gave me a reduction in core temperature from 96*C to 89*C when tested with GO-ORTHOS.

My concern is this:
89*C still seems pretty high. It's just below the temperature at which my fan spins at full speed (91*C) and Intel has set the TJunction at 90. However, because I see people here and other places reporting that OVERCLOCKED CPUs run at 40-60*C, I start to wonder whether everything is how it's supposed to be. The lowest temperature I've recorded on my CPU at idle is 60*C.

Also, I would have continued testing lower voltages, but 1.0000 is the lowest one available in the RightMark CPU Clock Utility.

RMClock's "Auto-adjust intermediate states VID" sets higher voltages for lower multipliers. Is this correct? Additionally, I have the choice of setting my CPU to constantly run in "High performance" mode rather than "Performance on Demand." The difference is that, there will be less CPU frequency when there is less load. This seems like a good idea, but the voltage is lower when the CPU is on max frequency (1.0000) than it is on idle (1.5000).

Here is a table of voltages and multipliers:
6x --> 1.5000V
7x --> 1.1250V
8x --> 1.0875V
9x --> 1.0625V
10x --> 1.0250V
11x --> 1.0000V
---------------------------------------------


My BIOS is up to date and the system is completely stable, so I guess I should be happy with a job well done, but I would definitely appreciate some comments on this!

Thanks in advance
Cbeppe.

 

Have you cleaned your system of dust/debris?

Have you recently re-pasted the cpu/gpu?

Are you using a good notebook cooler?

What is this system mainly used for (and for how long...)?

 

Hi Tilleroftheearth,

Thanks for taking an interest

On a later thought I should probably have added this to the post above, but here goes:

1. No, I have not been able to clean the insides of the laptop because I'm not brave enough to do so. This is my only laptop, it has a lot of information on its HDD and to clean the CPU and HSF of a dv6 series laptop just about everything needs to be disassembled.

2. I have never done any such thing, and the reason is the same as for the dust cleaning. I've seen the videos on youtube as well as guides around the internet, and it just seems a little too risky.

3. Not at the moment, but I've been looking at this one: Amazon.com: Antec USB-Powered Notebook Cooler: Electronics

Despite not having one of these, my laptop never stands flat on the table. I usually wedge my wallet between the table and the back of the laptop. This creates a 5-7cm (2-3in) clearing between the vents and the table

4. It's used as my main home laptop. I don't have a desktop, and my school provides an old macbook that I use for work. Anything intensive like games (Flight Simulator X, Crysis (2), etc.) is done on this system. As a result it functions much like a desktop computer would. The system is about 3 years old now, but through a lot of good software tweaking I'm able to make it run fairly intensive programs.

Again, thanks for the quick reply to my thread. This seems like a great community to be part of. I'll update my sig to display my specs.

Cbeppe.

 

You may not have to take it apart to get meaningful results: try blowing a can of compressed air into the intake/exhaust ports.

The best would be to disassemble it either partially or fully to clean it more thoroughly and even better re-paste the cpu/gpu, of course. After 3 years and assuming it wasn't done at all after you purchased it, it is nigh time it was done (especially with those temps).

That notebook cooler is one I have used (a few of them, actually). I can recommend it if your notebook draws fresh air from underneath. I could see at least 10 degrees celsius cooler systems with that cooler. Definitely worth it for $18 and should provide a better cooling solution than simply lifting the notebook with your wallet.

Good luck.

 

Before doing that, stick something thru the underside vent to stop the fan from spinning. Compressed air makes the fan spin so fast that the bearings could fail, resulting in annoying noise.

Dropbox - VIDEO0009.3gp - Simplify your life

 

Thanks a lot for the advice, both of you!

Looks like I'll be shopping for air spray. I'm considering taking everything apart, since there's probably no warranty left on it anyway. Just have to make sure to back everything up first.

One question remains though:
RMClock allows me to set a 'maximum performance' mode in which only the highest multiplier on the CPU is used (11x). At this multiplier, the voltage is at its lowest and the frequency is at maximum of 2.2GHz. Should I use this mode rather than letting the CPU choose the multiplier itself? I've seen a decent performance gain in several programs by choosing the 'Max perf.'


Thanks again for the quick replies

Cbeppe.