| Index | Recent Threads | Unanswered Threads | Who's Active | Guidelines | Search |
 |
World Community Grid Forums
Category: Support
Forum: BOINC Agent Support
Thread: AMD temp spike with liquid cooling on max WCG work setting, help. |
| No member browsing this thread |
|
Thread Status: Active Total posts in this thread: 23
|
|
| Author |
|
|
DaveRay
Cruncher USA Joined: May 3, 2007 Post Count: 12 Status: Offline Project Badges: 
|
All MB settings are default. Clock speed is default (fast). Everything and I mean everything is the same as previous MB that ran without problems. Same software and same hardware. I'm not playing with any computer settings.
Could I have used too much thermal paste? Saw something while surfing about using too much thermal can actually reduce heat transfer, farther and through more stuff for heat to travel. Comment was that thermal paste is just to get the air bubbles out providing good contact between CPU and cooling device contact surface. Again, I ponder, how much more CPU work does BOINC Device max output Device setting give vs standard or minimum Device setting. Or, is there really no CPU effect or difference at all? |
||
|
|
SekeRob
Master Cruncher Joined: Jan 7, 2013 Post Count: 2741 Status: Offline |
The Standard and Minimum profiles were purely targeted at laptops who cant dissipate heat fast enough. They're bad, as they cause fan revving at the wrong percentages. Later a default of 50% became recommended instead of 60%, so the cadence of 1 second computing, 1 second pausing would not cause the fan to alternate and wear out sooner. At 60% the cadence is 3 seconds running, 2 seconds pausing, at 40% the inverse, 2 seconds running, 3 seconds pausing, where 2 seconds is long enough to get the fans going again.
Why whole seconds... that's all that BOINC and the science control apps understand. For tools that offer smoother controls, more involved, visit the Community Maintained FAQs. Not going to peddle my pref today... it no longer works on Windows 10. |
||
|
|
Sgt.Joe
Ace Cruncher USA Joined: Jul 4, 2006 Post Count: 7849 Status: Offline Project Badges: 
|
Could I have used too much thermal paste? Yes, this may have been possible. If the thermal paste was too thick when seating the cooler, this could have caused the cooler to not seat properly and not get maximum mating contact. Possible, but if you were careful, unlikely. Cheers
Sgt. Joe
*Minnesota Crunchers* |
||
|
|
NAP2614
Master Cruncher Joined: Mar 27, 2007 Post Count: 2546 Status: Offline Project Badges: 
|
Could I have used too much thermal paste? I have one that I had to resort to lapping. Lots of hard work later, all is well. Finished the lapping with silk and tooth powder.  |
||
|
|
DaveRay
Cruncher USA Joined: May 3, 2007 Post Count: 12 Status: Offline Project Badges:
|
Thanks for all replies, ideas and suggestions. You sure are a bunch of smart people trying to help this "Grumpy Grandpa".
----------------------------------------I may go through all the work to dismantle/disconnect CPU cooling surfaces to clean and reapply thermal paste with greater care to get a more efficient yet thinner amount. All endeavors I can do to enhance thermal transfer. It's a lot of work for me. I may just wait until the previous fantastic MB that worked without problems comes back. I will have to do all that cleaning and reapplying of thermal then as well. I have retired twice so it can be difficult to fit all this work into my schedule between naps. Again, my gratitude for your patience as you translate your replies in a language of computerese to one I can read and understand. [Edit 1 times, last edit by DaveRay at May 4, 2017 6:03:10 PM] |
||
|
|
SekeRob
Master Cruncher Joined: Jan 7, 2013 Post Count: 2741 Status: Offline |
IBM years and years ago did research on best CPU surface, and they came up with with some micro-grooving/dithering/edging pattern... greater surface, greater dissipation, closer metal to metal transfer and least possible air/bubble capturing between the 2 surfaces... sort of a can't go wrong way... polishing and repasting would destroy this of course. IBM being IBM, likely patented...
|
||
|
|
DaveRay
Cruncher USA Joined: May 3, 2007 Post Count: 12 Status: Offline Project Badges:
|
Most interesting information. I am getting more and more interested in the CPU cooling interface and the optimum thickness of thermal paste. I will admit I have subscribed to the more paste is better school of thought. When you mate the surfaces the paste will automatically squeeze out to self set the proper thickness. I'm thinking this certainly isn't right. I would like to hear some more thought and ideas on this issue. The IBM research you spoke of makes me think. Is there any research or guidance about the optimum thickness for thermal paste applied to the mating surfaces? If there is a recommended thickness could you compare it to a known object I could use to measure? I would like to hear some discussion about what thermal paste (besides liquid nitrogen) is best and how to effectively clean the surfaces before paste application. Again, I say thank you. This may seem like a subject not worth the time to some, but I think there are more ways to enhance heat transfer in the thermal paste arena I am not using.
|
||
|
|
KLiK
Master Cruncher Croatia Joined: Nov 13, 2006 Post Count: 3108 Status: Offline Project Badges:
|
Like other said, you must not polish the surface too much.
----------------------------------------I for one use "toilet paper" for that...easy to use, cheap, not to polished, easily disposable & not many chemicals to be put onto CPU... So I wipe ceramic paste off & apply another one. Previously I've been using the old credit cards (cleaned before of course) to smooth the ceramic paste. Now I don't anymore, as I apply the paste from the tube vertically - so that it leaves some extra paste. I go around the top of the CPU, squeezing out a little on the tip & dipping a ceramic paste to the CPU. After I finish dipping all around CPU, put the cooler on fixing it diagonally 1st, then the other diagonal - IMPORTANT you do it that way, like you tighten the wheel on a car. & then you power the computer, go in BIOS, recheck the temps in BIOS (on intels should be more than human temp or 40°C top in summer). Then I restart to boot & after booting when the computer starts, a small program called Tthrottle kicks in to manage the temps. Most of my Xeons are on 70°C, some go to 80°C when it's cleaning time...above 80°C a Tthrottle kicks in, to throttle down the BOINC with CPU...so I don't burn down the CPU or motherboard - more importantly I don't burn out some GPU, which are expensive! & I don't reapply the paste for 5 years... Hope it helps...but you can also watch some Youtube videos how to do it...just make sure you watch professional ones from intel or AMD & not some novice thinking (s)he's expert?! ;) |
||
|
|
DaveRay
Cruncher USA Joined: May 3, 2007 Post Count: 12 Status: Offline Project Badges:
|
 Everyone, I formally declare victory!Who was the famed philosopher who said "when all else fails, read the instructions"? I did a lot of web looking and bought some arctic 5 thermal paste. Yes, less is more! I went to the arctic 5 website and found excellent directions and learned about "tinting". By following their instructions I have a dramatic CPU temp drop and I mean dramatic! I would urge all of you to learn about how tom properly clean your CPU and Heat-sink and to learn how to tint. A small amount of thermal paste is most efficient. Good thermal paste costs more but if you apply it properly you will get many uses. With Arctic 5 there is claimed a break-in process that promises even lower temps. Before when I installed WCG/BOINC my computer CPU temp would start climbing to 65C and shut everything down. I am now running at mid to upper 20s C and it is stable. I am back with you, generating points and adding my computing to yours to make a difference. We will never really know fully how are unused computer time added together can touch individual lives in such a meaningful way. Dave Root, Radcliff Kentucky USA |
|||
|
||||
|
Sgt.Joe
Ace Cruncher USA Joined: Jul 4, 2006 Post Count: 7849 Status: Offline Project Badges:
|
Glad to hear you got it working properly.
----------------------------------------Cheers
Sgt. Joe
*Minnesota Crunchers* |
||
|
|
|