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775 Temperature

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August 7, 2005 9:38:06 AM

Hi All

I’m looking for some advice on acceptable working temperature of a Intel 775 3.0Ghz chip?

I would appreciate any advice.

Regards

Gary

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August 7, 2005 7:46:49 PM

Throttling doesn't begin until about 75 celcius. You're ok up to about 65c under load.
August 8, 2005 6:14:49 AM

+This question is to general, be more specific. Do you have this CPU and what are the current temps? Are you liquid cooling or other?

ASUS P5WD2 Premium
Intel 3.73 EE @ 5.6Ghz
XMS2 DDR2 @ 1180Mhz

<A HREF="http://valid.x86-secret.com/records.php?PHPSESSID=792e8..." target="_new">#2 CPUZ</A>
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August 8, 2005 7:13:17 AM

Sorry, I should have given more details.

I need to build a near silent rack mount PC using Intel 775.

So I’m trying to weigh up performance against noise level. At the moment the average temp on idle is around 55c. Is this acceptable for a 775 3Ghz L2?

Thanks for the advice.

Regards

Gary
August 8, 2005 10:05:11 AM

Yes, it is acceptable. The reason that I asked for more info is becuase there are other heat concerns that come into play with this setup. I dont like to see the temps at 60C or beyond. The Northbridge is the other component that gets really hot on the 775's. I would at the very least put a small fan on the Northbridge. It can otherwise cause instability. Your best bet is to go with a liquid cooling setup, but you can get by without it. Are you using the stock CPU cooler? Also dont skimp on the PSU for this rig. They draw an unreal amount of W's and can become unstable if the PSU isnt up to par.

ASUS P5WD2 Premium
Intel 3.73 EE @ 5.6Ghz
XMS2 DDR2 @ 1180Mhz

<A HREF="http://valid.x86-secret.com/records.php?PHPSESSID=792e8..." target="_new">#2 CPUZ</A>
SuperPI 25secs
August 8, 2005 12:30:25 PM

>I need to build a near silent rack mount PC using Intel 775

Oh man.. good luck with that !!

>At the moment the average temp on idle is around 55c.

Try running prime95 for a while and see what you get. I doubt it will still be ok :/ 

= The views stated herein are my personal views, and not necessarily the views of my wife. =
August 8, 2005 9:30:59 PM

Shhhh he doesn't like the 3 numbers 775.

-Jeremy Dach
August 9, 2005 1:14:34 AM

Maybe it's that for more than 20 years, Intel has said the max temp for thier chips is 55c, now people are asking if that's a good idle temp.
August 10, 2005 9:02:12 PM

Thanks for the detailed response; these systems are being used in theatre for audio show control. This is why they need to be silent. They also need to be robust for touring around the world. I’m concerned about your suggestions about skimping on PSU, I have been tying out a 300w fan less PSU by Silverstone which seems very stable. Do you feel this is to lower wattage? There are 3 hard drives, DVD, floppy, 1GB ram, Asus motherboard.
August 10, 2005 10:39:14 PM

Yes, you need to address this issue ASAP. I doubt very seriously that your system is as stable as you think. I just ran your system through one of the best Wattage calculators that I know of and based on some very average components you need a minimum of 319W. This is a power hungry setup, the PSU is probably the most important component. If I were you, I would want a min of 400 Watts and it needs to be a very high quality PSU. You could damage your system with an under powered PSU.

<A HREF="http://www.extreme.outervision.com/index.jsp" target="_new">http://www.extreme.outervision.com/index.jsp&lt;/A>

ASUS P5WD2 Premium
Intel 3.73 EE @ 5.6Ghz
XMS2 DDR2 @ 1180Mhz

<A HREF="http://valid.x86-secret.com/records.php?PHPSESSID=792e8..." target="_new">#2 CPUZ</A>
SuperPI 25secs
August 11, 2005 9:30:59 AM

That calculator seems to be really pessimistic about a lot of things IMHO.. 30W for a DVD-R/W seems a lot to me, but who knows. 40W for the motherboard seems excessive and 3 DDR Dimms consuming 30W ? I dont think so..

I even have a hard time believing a keyboard and mouse would draw anywhere near 3W unless they are wireless in which case they are battery powered. Quickly checking my keyboard and mouse I see they have a 50 mA and 75mA rating @5V, which means 0.6W combined...

= The views stated herein are my personal views, and not necessarily the views of my wife. =
August 11, 2005 10:42:48 AM

Its a calculator for Overclockers. I dont doubt that it would return a higher number of Watts, but for someone like myself that pushes their system like I do its better to have to much than to little.

In case the person that started this thread checks here again, dont you think that he is asking for problems with a 300W PSU?

ASUS P5WD2 Premium
Intel 3.73 EE @ 5.6Ghz
XMS2 DDR2 @ 1180Mhz

<A HREF="http://valid.x86-secret.com/records.php?PHPSESSID=792e8..." target="_new">#2 CPUZ</A>
SuperPI 25secs
August 11, 2005 1:40:19 PM

>but for someone like myself that pushes their system like I
>do its better to have to much than to little

Its better to have a correct estimate first and then apply a safety margin. Secondly, "too much" isnt even ideal in this case either as eg a 800W PSU will not be delivering the cleanest signal when you only draw 100W, not will it work very efficiently at such low loads.

>dont you think that he is asking for problems with a 300W
>PSU?

Probably, although overall rated wattage doesnt tell you a lot. Then I also think he is asking for trouble designing a SFF around a prescott when noise is absolutely critical. Pentium M or A64 would be the obvious choice...


= The views stated herein are my personal views, and not necessarily the views of my wife. =
August 11, 2005 2:42:48 PM

Quote:
In case the person that started this thread checks here again, dont you think that he is asking for problems with a 300W PSU?

It's a little borderline, but given that he's not going to have a monster graphics card I don't think he's quite as bad off as you think.

I'd still suggest he sticks with something like a Fortron 350 - 400W with the 120mm fan though. Still very quiet but also reliable.

As for the aim of a near-silent PC... I do have to agree with P4man - he's chosen the worst possible modern proc for that application...

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