silent cinema pcs and undercloking

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

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."

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>

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

Ups! it is only a Coopermine

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

Will arrive anytime soon now.

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

Is this right?

Yes, this is correct.

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

No prob =)

Jesus saves, but Mario scores!!!

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...

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

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

Found de Zalman cooler:
http://www.zalman.co.kr/english/pr [...] 00b-cu.htm
it is a 2 lb cooper heat sink!
92 mm suspended fan; adjustable speed...

it must cost more than than de cpu

All Intel's socket370 processors are FC-PGA2 now, even Coppermines. Sometime the only way to tell if their Tualatin is by the voltage, which is written on the package. With the Celeron, you can also tell by the amount of cache, 128k for the Coppermine, 256k for the Tualatin. But with the PIII, voltage is the only way to tell.

FC-PGA2 simply means they use the heat spreader on the core. I have an FC-PGA2 Coppermine PIII running on an old BX motherboard.

What's the frequency, Kenneth?