silent cinema pcs and undercloking

[dionicio]

I am about to assamble a silent cinema pc
and have not yet find a viable motherboard for the task

Having given up on finding a good enough
fanless CPU for the task
(Divx Playing)
I am thinking of underclocking as a way
of forced cooling.

My primitive arimetic goes like this:

Troughbred 1700+ bus 266 (1467) 1.5V socket A 90oC 49w
multiplier 5.5?

tweaking:
1.2 v multiplier 3.5


downspeed 3.5/5.5=0.64
downvolt 1.2/1.5=0.8
estdownwatt 0.64*0.8*0.8=0.41

Estimated under-clocking:

Simulated Troughbred 1088+ (266*3.5=931) 20.1 watts

Politely asking the Comunity for any help

 

[Crashman]

You can have a nearly silent PC simply by using a low speed 80mm fan to cool it.

What's the frequency, Kenneth?

 

[Kelemvor]

Zalman makes a pretty good "silent" cooler. I've heard that it really is ridiculously quiet. Might want to look there. Otherwise, I hear that the new Heat Pipe coolers from coolermaster are very quiet. Also, 120mm fan (most anyway) may be even quiter at a given CFM.

She said "I love a man in tight jeans" and I said "They're not supposed to be tight I just got fat."

 

[LED]

At any speed it takes nerve to run that proc w/o a fan. I am curious though.......Anyone care to try dions underclock with just a heatsink?

I sold my sig for $50.

 

[Kelledin]

Get yourself a Tualatin 1GHz/133FSB for $150. You can underclock it all the way down to 500MHz, and it will still be powerful enough to play DivX files and DVDs. I know this because I run a P3-750 laptop; it plays DivX/DVD fine even when it's SpeedStepped down to 500MHz/66FSB.

At that speed, you could probably also undervolt the CPU considerably and still have it remain stable. Then you might very well be able to run it with just a passive heatsink.

<pre>We now <b>return</b>(<font color=blue>-1</font color=blue>) to an irregular program scheduler.</pre><p><P ID="edit"><FONT SIZE=-1><EM>Edited by kelledin on 06/13/02 08:47 PM.</EM></FONT></P>

 

[Garasaki]

Why not go with the new VIA C3? Sounds like it'd cover everything you want to do just fine, and it can go fanless at only 12 watts of power. Or do some watercooling...

 

[dionicio]

I allready have a Tualatin but
What mb will let me play with all
settings (including core voltage)?

 

[dionicio]

Haven't herd of heat pipes before
Will chek on CoolerMaster
Thanks Kelemvor

 

[dionicio]

Ups! it is only a Coopermine

 

[Garasaki]

Well, not to sound like a salesman...but the VIA chip costs 70ish bucks, and will run in your current PIII mobo. A new mobo will cost around 100ish, plus one of these new-fangled quiet hsf combos...it just makes the VIA option look pretty attractive to me, when your main concern is heat...

 

[dionicio]

I am asking my provider for a 1Ghz C3...

Will arrive anytime soon now.

 

[kief]

You know I keep hearing this and its getting old. You can still get PIIIs and most dont need a fan is you use a nice server grade heatsink. I have a 500 PII, a 550 PIII, and a 933PIII and NONE OF THEM HAS A FAN!!!! Just heatsinks..... I never cared about noise, just happened across them for a good price and its always nice to not have to worry about a fan dying on you =) Even the 500 plays DivX and DVDs fine.....

Jesus saves, but Mario scores!!!

 

[dionicio]

Seems to be (acording to cpuscorecard.com)
that Tualatin packaging is only FC-PGA2

Is this right?

 

[dionicio]

"Even the 500 plays DivX and DVDs fine....."
That is a definively good piece of data.
Thanks a lot for it, Kief..

Really would enjoy if you were on the mood
to talk a bit more about it.

 

[Kelledin]

Seems to be (acording to cpuscorecard.com)
that Tualatin packaging is only FC-PGA2

Yes, this is correct.

<pre>We now <b>return</b>(<font color=blue>-1</font color=blue>) to an irregular program scheduler.</pre><p>

 

[dionicio]

There are lots of PIII tualatin motherboards!
even dual ones!

Just need to find a tualatin provider

 

[kief]

No prob =)

Jesus saves, but Mario scores!!!

 

[dionicio]

I have found a 1.13Ghz tualatin at $125 us
28 watts

 

[Garasaki]

I have NO data to back this one up, but I've heard tons of rumors and bits and pieces of SERIOUS problems with that perticular chip...only that freq. though...I dunno if the problems have been solved (if they ever existed...), but you may consider moving up or down a freq...

Its crazy that those PIIIs are so much cooler then current AMD chips...

 

[Crashman]

Ever seen those huge cooling stacks on nuclear power plants? That's how a heat pipe works.

What's the frequency, Kenneth?

 

[jihiggs]

why dont you just get the retail amd and use the heat sink that comes with it. they are pretty quiet.

how do you shoot the devil in the back? what happens if you miss? -verbal

 

[dionicio]

Same Provider offer a 1200 Mhz tualatin

 

[bront]

You could always try a C3.

Personaly, I'd get a case with an Antec TruPower PSU. It's got tempurature controling fan power plugs that reduce noise significantly. These work with up to 3 case fans.

"Meesa thinks that yousa gonna die" - Darth Darth Binks

 

[dionicio]

I founded the heat pipe coolers here:
http://www.coolermaster.com.hk/en/products/cooler/main.html

Impresive especifications!

 

[dionicio]

Found de Zalman cooler:
http://www.zalman.co.kr/english/product/cnps6500b-cu.htm
it is a 2 lb cooper heat sink!
92 mm suspended fan; adjustable speed...

it must cost more than than de cpu :/