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S460 - heat problem solved by undervolting

post #1 of 14
8/5/05 at 7:17pm
Thread Starter 
Has anyone tried to undervolt their S series notebook?

CPU is running at 49 degrees, which is VERY impressive...

I can hardly feel any heat on my hands...

You guys should check it out

http://www.notebookforums.com/showthread.php?t=70943

btw

I got

MIN: 0.700 volt (800MHz)
MAX: 0.956 volt (1730MHz)

I'm getting about 3:30 in basic surfing
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post #2 of 14
8/5/05 at 11:20pm
Yeah, used centrino hardware control and got regular temperature down to around 45-46, but the temperature shoots up the second any games run.
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post #3 of 14
8/6/05 at 12:02am
Thread Starter 
really.. I gotta try some games !, but you know it's better than nothing
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post #4 of 14
8/7/05 at 1:54pm
Do you experience better battery life or is the main reason to undervolt just to get it to run cooler?

Cause right now my s360 runs around 44-47 with no alterations...but I'd consider undervolting if it meant improved battery life.

Are there any negative aspects to undervolting?
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post #5 of 14
8/7/05 at 9:09pm
there aren't any if you use programs like prime95 to check the stability of those settings. If anything, undervolting should improve cpu lifespan
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post #6 of 14
8/7/05 at 9:50pm
I'll have a go at this with Centrino hardware control, test it, and post my results
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post #7 of 14
8/12/05 at 3:32pm

dramatic battery life increase?

alsj411 - you're getting 3:11 on an S460 off the regular battery or the extended battery? What's your brightness setting?
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post #8 of 14
8/14/05 at 4:31pm
Thread Starter 
it really depends on what you are doing, but I got 3:11 on my regular battery doing basic surfing..
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post #9 of 14
8/15/05 at 10:06pm
whooa,my S460's CPU never go below 55 degrees even after undervolting to 0.7V at 800m and 1.0v at 1.7G,that's temperature when it is idle. I put it on a desk and the room is air conditioned... The right palm rest is not hot but the bottom of the right lower corner is ready to BBQ. What else can I do to cool down the machine??
I found some slots at the bottom are covered by metal foils at the inside, I wonder will it be cooler if I tear the foil off....
I also download the Forceware 77.70 for mobile chips from guru3d, but can't install it...
Anyone has any idea?? Thanks first.
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post #10 of 14
8/15/05 at 10:49pm
"I wonder will it be cooler if I tear the foil off"

I did You have a memory temperature testing program?

You could also lap the heatsink and use some AS5...i will be doing that when i get some time...in previous notebooks that i had the temp difference was 3-5 degrees...not much but free

Get a laptop cooler that runs on usb...

Miniature ram heatsinks...mine are on the way

As for the Forceware just go with the regular one from the Nvidia site. Runs no problem on mine...the difference being that the menu has a few less power saving options...i had problem installing Forceware Go as well.
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post #11 of 14
8/15/05 at 11:15pm
Haha Pygo you've already done that,does it really become cooler after removing the foils??
I don't have a memory temperature monitor and don't think there is any temp sensor on the memory ...
AS5 sounds like a good idea! And where do you get that mini ram heatsink?
Sony said that CPU and GPU are both in the right palm rest, if they share the same heatsinker maybe you can paste AS5 on both of them.
Pygo could you post the results after installing these mods? If they really helps I will get some to cool down that small lappie.
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post #12 of 14
8/16/05 at 3:23am
The cpu and gpu use one heatsink but it is in the far right corner where the hot air vent is. If you look inside you can see the fins on the heatsink. I am assuming that the S4 is like the older S's which i've dismantled previously.

Is it any cooler without the metal piece...in theory it should be, especially if your running a cooling pad, but no way for me to test this. It is kind of odd though, it seems like the metal pieces where added from Sony after for some reason or other, and not part of the initial design. Would have been nice if Sony placed both memory modules on the bottom.

The heatsinks are a no-go i found out they are 5mm thick, which is way too big and grinding them down will probably defeat the purpose
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post #13 of 14
10/30/05 at 7:34am
Uhhh - the foil is there to prevent dust etc getting through to the memory - if you look closely, it's still got gaps which let air through, but prevent other trash getting through.

Artag
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post #14 of 14
9/22/06 at 3:27pm
thanks!
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