I *think* I got rid of the CPU noise for good, on Core Duo. Please read.

[chriscannon]

I found a very effective fix for my system, however it takes a little longer. Basically, I began by installing a music player, and hooking that up to a 5.1 surround sound system. At this point, I downloaded some music and started listening, Now, I set the volume to 100% on the tablet and on the speaker's amplifier. I waited in the room for several hours; this let the process work its magic on the PC. After several hours, low and behold, I could no longer hear the noise. And best of all, Ambient noise was reduced significantly even outside the tablet!

[/sarcasm]

thats pretty funny peyysageek... and strangely enough, i bet it works...

[montigo]

Hey everybody.

[*]Advanced CPU Settings page:
[*]Platform Tab:

• check: "Enable Popdown Mode"
• THE MOST IMPORTANT!! uncheck: "Enable Popup Mode"

I have a Dell Latitude D830 notebook with Intel Core 2 Duo T7100 and Intel 965 Mobile Chipset.
From some reason, all the items in the Platform tabs are greyed-out (cannot be edited).
Any idea how can I overcome it?

[ShIzNiTs]

I have the same problem as a few above, it is all grayed out in the last category thus I am unable to check/uncheck anything. Anyone know of a fix for this?

Also, is this just a Centrino problem??? If I had stuck with the cheaper Dell Wireless instead of upgrading to this Intel Wireless would I still have the hissing noise?! Let me know ASAP cause I can still get my money back for this thing.

Thanks,
Shiznits

[jp20009]

Yes, there is a way to resolve this. You can download the beta of RMClock 2.30, I think its designed for newer processers (I have a Core Duo T7500). Version 2.25 did not recognize the processor characteristics but 2.30 did. In 2.25 the Platform fields were grayed out for me, but I can use them in 2.30. I am not sure how well RMClock manipulates Windows Vista though. Unlike Yubastard, I have the buzzing problem in Vista and I can only stop the buzzing by enabling the HT setting (I can't remember the specific name as I'm not at my laptop right now). Try version 2.30 though to get all of those options.

If you have Vista you'll have to manually start RMClock each time, FYI.

[Borntogetbusy]

Hey all...

Thanks for the advise on this forum!

I recently installed RMcpuClock 2.25 on Vista and set it up according to the instructions given here and the noise from my HP Pavilion Dv 6000 has been reduced.

However RMcpuClock monitors the core temp. at around 60-65 degrees C. Cant quite figure out if this is too hight? Any ideas?

Cheers!

[DennisTT]

Hey did anyone get this to work on Windows Vista? :S

[montigo]

RMClock 2.30 hangs on my Windows Vista.

I load the application without doing anything or changing settings, and my Dell Latitude D830 freezes after a minute or two.

[JHarkness]

Hello all,
I was researching the purchase of a new laptop and happened upon this forum via one thread or another. I'd like to add my 2c worth and see if someone has evidence to the contrary of what I am about to say.

I haven't read every single post here so I may have missed some details, but it appears to me that the CPU is being blamed totally for this 'noise problem' and I'd like to put it to this forum that perhaps it's not the case.
Even the old laptop I'm using now whines ever so slightly in a really quiet room and thats a single core 1.8GHz P4-M. As someone said, it's a bit like tinnitus (ringing in the ears) in that it gets more noticeable when you tune in to it. But in this laptop at least, the fan is noisier than the whine and I barely notice it.

What I am proposing then is that maybe it's the DC-DC converters within every laptop that people are hearing. To be more specific, the actual windings of the various transformers or inductors used in such power supplies which are in almost every piece of modern electronics equipment.

I do have a background in electronics and will try to give a simplified explanation of what I believe may be happening. That is, the windings of the inductors are 'ringing' with the frequencies used in the DC-DC converters (power supplies). By that I mean they're vibrating ever so slightly. The bigger the load placed on the converters by the CPU, the more the sound changes. By virtue of the way they work, it can change so much as to be out of hearing range for some or the ringing gets less. Even the CPU turning on and off will cause some of the abrupt changes in sound as it tries to conserve power. That's why I think the 'fix' proposed here works to some extent, but for the wrong reasons. It's possible that firmware updates from manufacturers may provide a solution for some too but I think the cause is still a mechanical one.

Now if this is the case, what can be done about it? Well, probably not a lot I'm afraid. The fact that these DC-DC converters exist allows you to have a portable notebook. If you had to lug around a few heavy power transformers along with a notebook they would soon lose their appeal, but I bet it would sure run quietly.

I know that some types of transformer coils are actually dipped in a kind of lacquer during manufacture in an effort to stop their windings from ringing. So perhaps there may be a technically brave soul out there with a spare converter board or motherboard who'd like to try manually applying a lacquer to every winding and former they can find and see if that helps. someone may even have a better idea. But be aware though that there are places you definitely don't want to get any lacquer and I take no responsibility for anyone that tries this. But it may prove the point one way or the other.

[Clemenza]

I'm sorry I may have missed it earlier in the thread. But does this 'whining' noise happen with AMD processors as well?

I have a Core 2 Duo 1.7ghz on my HP Pavillion and am actually sending it back.

[chriscannon]

I dont have any noise at all from my computer, atleast not loud enough to notice...

C2D 2.0 ghz...