Eliminating the CPU "hiss" (whine?) from the T61?

michelkenny · 09-27-2007, 08:42 PM

You can keep your BIOS CPU Management setting enabled.

Download "RMClock". In "Advanced CPU Settings" -> "Platform #1" you have two choices:

1) Enable the "Disable C4" option or
2) Disable either the "Enable popdown" or "Enable popup" (can't remember which it is).

Doing either of these 100% eliminates the whine. The program needs to be running to set the option, so you need to have it run on startup. Try them out and see if they cause problems. Before when I had XP on my PC, doing the C4 one would crash my laptop after a while. They have since released a new version, and I moved to Vista. Hasn't crashed since.

Pansophic · 09-28-2007, 01:47 AM

Here is another method, depending on what you do, it can help or make things slower. try going to power management and switch from Performance to Power Saver, the hiss should go away.

LMN8R · 09-28-2007, 11:46 AM

Quote:

Originally Posted by michelkenny

You can keep your BIOS CPU Management setting enabled.

Download "RMClock". In "Advanced CPU Settings" -> "Platform #1" you have two choices:

1) Enable the "Disable C4" option or
2) Disable either the "Enable popdown" or "Enable popup" (can't remember which it is).

Doing either of these 100% eliminates the whine. The program needs to be running to set the option, so you need to have it run on startup. Try them out and see if they cause problems. Before when I had XP on my PC, doing the C4 one would crash my laptop after a while. They have since released a new version, and I moved to Vista. Hasn't crashed since.

Disabling C4 worked perfectly! Thank you very much.

redmaxx · 09-28-2007, 02:27 PM

I don't think this one is CPU related. I am very sensitive to this noise, I hear it on HP, Dell and Apple computers, but on my T61, nothing, unless I put my ear to my keyboard. I have one with Intel graphics.

Oops...didn't read page 2 before posting this. I don't know why mine is so much quieter by default.

michelkenny · 09-28-2007, 05:17 PM

Quote:

Originally Posted by redmaxx

I don't think this one is CPU related. I am very sensitive to this noise, I hear it on HP, Dell and Apple computers, but on my T61, nothing, unless I put my ear to my keyboard. I have one with Intel graphics.

Oops...didn't read page 2 before posting this. I don't know why mine is so much quieter by default.

The whine is related to the Core 2 Duo CPUs and their lowest power saving state. Some laptops it is really loud, others just a bit loud, and others really quiet. It plagues ALL laptop manufacturers right now.

LMN8R · 10-02-2007, 10:42 AM

I just wanted to follow up here:

-Checking the "Disable C4 mode" fixed the problem, but caused hard freezes in my computer multiple times over only a day or two.

-Un-checking "Enable Popup mode" also fixed the problem, and I'm running on a week or so, so far, without a single crash.

Also, un-checking "enable popup mode" doesn't seem to hurt battery life nearly as badly as disabling C4 mode.

Hellbore · 10-18-2007, 04:36 AM

I kinda like the noise, it sounds cool. It keeps me company while I'm studying in the library or workin from home. It's like white noise, I don't even need an Ipod I can just listen to the laptop sounds. It even impresses the ladies, they ask "what is that noise?" and I tell them it's a very hip new form of techno music. I can tell from their impressed silence and walking away that they think it's hot.

Grimhound · 10-18-2007, 06:27 AM

Why the heck do they even sell laptops with the Core 2 Duo architecture if Intel can't fix their own chips to work right?

michelkenny · 10-18-2007, 11:23 AM

Quote:

Originally Posted by Grimhound

Why the heck do they even sell laptops with the Core 2 Duo architecture if Intel can't fix their own chips to work right?

That's exactly what I've been thinking. I could understand the problem creeping up on only certain laptops from a single manufacturer. But this problem affects the whole Core 2 Duo line... why the heck did Intel release it like this?? If they did it properly they would have saved the industry millions of dollars in RMA returns.

stallen · 10-18-2007, 01:45 PM

Quote:

Originally Posted by Hellbore

I kinda like the noise, it sounds cool. It keeps me company while I'm studying in the library or workin from home. It's like white noise, I don't even need an Ipod I can just listen to the laptop sounds. It even impresses the ladies, they ask "what is that noise?" and I tell them it's a very hip new form of techno music. I can tell from their impressed silence and walking away that they think it's hot.

Yeah, I've gotten laid so many times from my CPU whine it's not even funny.