Folding heat problem & cooling thread

[DonaldG]

Originally Posted by mattlock

Donald, the Max case temp for your CPU is about 65°c. That's the temp taken from the center of the heat shield, the core temp will actually be higher than that, but the tech docs don't specify the max core temp.

To SMP client would load you at 100%, another option is running 2 instances of Orthos, or 4 instances of Prime95. In both cases you would need to set the CPU affinity. Orthos is probably the easier of the three to setup and run.

The temps you want to record are before and after @ idle and 100% load (this will not hurt CPU. It will throttle down if it gets too hot)

I'll post instructions on running multiple instances of Orthos later tonight. In fact that would be another good article for the forum.

OK Matt - that will be great. I will happily write it all up as an article complete with screenies and photos etc...

I have emailed the author of CoreTemp explaining what we are doing and pointed him to TSF and this section and threads...

Whatever, I will keep all informed of developments.


Further to my first post in this thread, I have added another thermometer against the case, about 5 inches from the temporary extra fan so that I can record the before/after air temperature being taken in & delivered to the cooling system. If I had another, I would place it at the back to record the exhaust temperatures too....

Yes - I am stating to worry about grinding the living daylights out of my beloved QX6800.....

[mattlock]

Hi Donald.

Let me know what you find out about Core Temp. I think its has something to do with Tjmax been read wrong. If it's set at 100c but it's actually 85c then your readings would 15c too high and vise versa.

Anyway, I've already written the Orthos article (atleast the rough draft). It would be great if you could supply a few screenies though. Only having a dual core, I can't get screenies of setting the CPU affinity or task manager screenies of all four cores being maxxed out.

I've got most of them already, but if you want to do the screenies from start to finish I'm ok with that also, just let me know.

Quad Core Stress Test

Core Temp arty will have to wait a day or two. It's 5am here.

Btw, I can understand why you would be reluctant to lap your quad, I know I wouldn't do it to my Wolfdale.
My socket 939 4400+...that's a different story. It'll be getting lapped as soon as I'm healthy enough.

[DonaldG]

I have received a very interesting and informative reply from Arther Liberman, the author of Core Temp.

It is worthy of sharing here because it shows how temperatures are calculated and why there is an apparent anomaly:

The DTS in Intel CPUs is very simple. There is a value you read from the DTS, which reports the current temperature relative to a certain point. This point is called Tj. Max.
CoreTemp = Tj.Max - DTS;
I'm not quite sure where SpeedFan gets it's Tj. Max value from, but looking at the temperature reported by SpeedFan, it has Tj. Max=85C set for that processor.
As you can see from the Core Temp screenshot, the Tj.Max value it reports is 100C. Core Temp usually reads the Tj. Max value from an MSR in the processor.
So as you can see, Tj. Max is the reference point to calculating the current temperature. One thing I would like to note is that it is improbable that core temperature
will be a lot lower than the processors TCase temperature (CPU: field in SpeedFan), so please take that into consideration.
Hope this helps to clarify matters.

My personal thanks to Arthur for taking time out to respond...

[DonaldG]

@JtP

I have written an article about downloading, installing and using Core Temp, complete with screenies...

Where do you suggest it put it? (No not there! - Within the TSF forum,,,)

[mattlock]

Originally Posted by DonaldG

@JtP

I have written an article about downloading, installing and using Core Temp, complete with screenies...

Where do you suggest it put it? (No not there! - Within the TSF forum,,,)

Hi Donald,

You'll need to post it in the New Article submission thread.
http://www.techsupportforum.com/arti...e-submissions/

Did you checkout the Orthos article?

Will you be able to help me out with some screenshots? If you can't it's ok. I've got a buddy here in town that has an E6600, and I can get the screenies from his PC. It'll just take a little longer.

Looking forward to seeing your Core Temp article.

[DonaldG]

You'll need to post it in the New Article submission thread.
http://www.techsupportforum.com/arti...e-submissions/

Roger that! I'll post it in the next 30 mins or so

Did you checkout the Orthos article?

Hade a quick look but not digested it - will do so in more detail shortly...

Will you be able to help me out with some screenshots?

Yes - no problems

Looking forward to seeing your Core Temp article.

Hope it is what is wanted... All the screen shots will be on my server but I habe no objecyion for them to be placed on the TS server. Copyright to TSF on the article & screenies....

[mattlock]

Originally Posted by DonaldG

I have received a very interesting and informative reply from Arther Liberman, the author of Core Temp.

It is worthy of sharing here because it shows how temperatures are calculated and why there is an apparent anomaly:



My personal thanks to Arthur for taking time out to respond...

Just to had a little more understanding to the temp subject.

The Tjuction Max is the thermaltrip point of the CPU. (The point at which it will shut down) The throttle point is 5°c lower than TJmax. Max Case temp is the temp measured at the center of the CPU Heat shield. There is a 10° delta between the TJ and the Case Temp.

For CPU health the temp should never be anymore than 20°c under the TJmax, or a case temp of 30° under the TJmax. (That said i still don't want my CPU sniffing 60°c)

[DonaldG]

I have just posted the article on Core Temp here:
http://www.techsupportforum.com/articles-tutorials-reviews/new-article-submissions/216837-installation-review-core-temp.html#post1296504


Matt - I will be digging deeper into the aspect of Tj max for the QX6800 and will revert when I have firm info...

[DonaldG]

Originally Posted by DonaldG

All the screen shots will be on my server but I habe no objecyion for them to be placed on the TS server. Copyright to TSF on the article & screenies....

Gee - I should use the spul chunker mor regerly....

BTW: the server I use is online 24/7

[JohnthePilot]

Many thanks Guys and for future reference Donald, the link is in my sig.

[DonaldG]

Further to my comments on the anomoly noted between Core Temp and SpeedFan

I have just spent the last few hours researching the subject of temperatures, temperature measurment of multi core processors.

Apparantly since the Intel Q6600 all the Intel multi core (Duo & Quad) the Tj max IS 100c. Therefore in my opinion, Core Temp is giving the correct readings.

SpeedFan is set as default to have a Tj max of 85c and will give an error of 15 degrees c.

It is a simple job to reset FanSpeed to read as if set for Tj max 100c by:










When done, clik OK and it will now read as if Tj Max = 100c

[JohnthePilot]

Please keep all these screenies as they are bound to come in useful.

[DonaldG]

Will do

[mattlock]

From what I've seen, the Core Duo CPUs with B2 stepping have a TJmax of 85°c all others are 100°. See what you can dig up. Here's one of the articles I found.

http://www.overclock.net/intel-cpus/...mputronix.html

Another fine job BTW,

[JohnthePilot]

I think when this is all sorted out it will be worth an article.

[DonaldG]

Got you PM John & replied...

Matt - I will have a look at that later... I am in domestic mode, putting in a dishwasher and washing machine that I have been under pressure for some time.. I can do a write up on that as well!

I hope to be back on line later...
Cheers

[mattlock]

Hi Donald, this is a reply to your post in the Quad Core Stress Test. Quad Core Stress Test

I wasn't sure that was the appropriate place to address your question. Since this thread is about temps anyway I thought I would reply here.

My first question is did you apply the Arctic Silver yet? If not, you'll see about a 10° drop in that load temp with it over the Zalman compound.

As for the rapid rise and fall in temp, it's normal.

On the roughly 12° temp difference between CPU0-1 and CPU2-3, that is something I'll need to look into a little more.

I'll hold off on the Orthos article until I get some clarification on the different core identities. The affinity may need to set differently. I.E Orthos affinity CPU0 and CPU2, Orthos2 affinity CPU1 and CPU3.

I'm off work next weekend and I think I'm going to my buddies house and play around with his Quad to get first hand look at different configurations.

In the meantime, you should apply the AS5 if you haven't so already.

[DonaldG]

All noted Matt
Last night when I did the test, I was very short on time and should have dedicated the other brain cell to the job too! I did not do any other tests that put less strain on the cores.

I think I misunderstood what you needed - Is it screenies of just setting the affinity on a four core (I can send you those later today ) or was it screenies of my processor glowing in the dark & photos of the smoke filled room et al?

At the mo, domestics & some very urgent work will keep me busy for rest of day...I hope to get on with the REAL TSF work later this evening.

No I haven't done the heat compound change yet. I want to let things settle a while. I want to make a record of before and after temperatures to catalogue the differences and do some photos on how the hose the old gunge off & replace etc...

See you guys later...

[mattlock]

Hey Don, first of all Congrats on the promotion. I knew it wouldn't take long.

Now on to the task at hand. I need screenies of the CPU affinity been set and I wanted a shot of the task manager performance tab showing all four cores loaded at 100%.
I want to witness the effects of different affinity configuration in relationship to the individual core temps. I won't be able to that until next weekend.

BTW, pics of the amber glow emanating from your tower like a beakon on the night will not be necessary. Hey look on the bright side, you can turn the heat down when using your PC and save money on natural gas

[DonaldG]

Thanks for the welcome Matt

I have cleaned the processor, new Arctic Silver 5 - at the moment I don't think it has made much difference - I did a log on all & photos but too tired to write it up now - I need to analyse the logs...

The screenie of setting affinity is no problem (see below) but a screenie of 4 cores 100% loaded may be a different matter - I tried to do a screen grab last night before the smoke got too bad but memory was saturated with the stressing and I couldn't capture the image.

Orthos 1:



Orthos 2: