Re: [SLUG] Overheating
On Tue, 2010-02-02 at 20:31 +1100, Ken Foskey wrote: - I will try and clean the heatsink on the Nvidia without removing it and no worry too much. Cleaning the Nvidia 8800GT was easier than I thought. I needed those small screwdrivers you use for glasses. The plastic cowling is secured by 7 tiny screws around the edge (web told me it was underneath but it was wrong). I opened it up and there was over 1cm of lint blocking the heatsink. Immediately it dropped from 70 to 50-60. It does go to 70 under load and can climb higher. The fan is now heaps quieter, not spinning up to full speed constantly. So in summary definitely look inside those graphics cards. - I will clean off grey goo on CPU and replace it with a thermal paste. The grey goo was easy cleaned with isocol rubbing alcohol. Easier than it looked actually. So I had two shiny surfaces. I got MX-2 thermal paste and put that on. It was the only one local store had but back of packet says it is a pretty good one, if you believe advertising. When I put it back together the CPU dropped about 5 degrees straight away and it has only once peaked out at 70 degrees under extreme load (heavy program running and a despeckle on a large scan). The box was cooking so it was basically the ambient temperature of the room and then add a heavy heat load inside. So it is definitely worth replacing the goo! The computer was warm enough to keep your coffee warm, so there is still an issue. I am not going to get aircon any time soon. I was reading that you can use air conditioning filter over the inlets to collect the dust so your case is cleaner. I can only see this working with a positive pressure fan drawing air from outside to inside. Is is worth putting a fan in the case to blow into with a filter on it? -- SLUG - Sydney Linux User's Group Mailing List - http://slug.org.au/ Subscription info and FAQs: http://slug.org.au/faq/mailinglists.html
Re: [SLUG] Overheating
On Tue, 2010-02-02 at 14:24 +1100, Mark Walkom wrote: Well the grease is needed as it facilitates a higher efficiency of heat transfer from the chip to the heatsink. Is this a laptop or a desktop PC? What are the CPU and GPU chips? Desktop. The CPU fan has been removed and replaced twice. Under load it jumps from 30 to 40 and with a hot ambient (no aircon at all) climbs to 80 and stops. Right now sitting on 29 and 26. The Nvidia card has a lot of cowling around the fans so I wonder how clogged it will be. Previously I had carpet and was in Campsie which was bad for dust. In summary: - I will try and clean the heatsink on the Nvidia without removing it and no worry too much. - I will clean off grey goo on CPU and replace it with a thermal paste. Thanks Ken -- SLUG - Sydney Linux User's Group Mailing List - http://slug.org.au/ Subscription info and FAQs: http://slug.org.au/faq/mailinglists.html
Re: [SLUG] Overheating
I disagree - though I don't have hard data to demonstrate :-(. The thermal-conductive paste on middle-aged machines is often very dry. Any time I service a machine (dust blow-out, more RAM etc) I check the CPU paste and usually renew it. You can buy the stuff from electronics places. Beware - the white stuff is supposed to be carcinogenic, keep it off your hands. Use silver stuff by preference. Kevin. On Tue, 2010-02-02 at 14:35 +1100, Jake Anderson wrote: you only need the grease if you have taken the heatsink off. -- SLUG - Sydney Linux User's Group Mailing List - http://slug.org.au/ Subscription info and FAQs: http://slug.org.au/faq/mailinglists.html
Re: [SLUG] Overheating
Have you noticed a difference when you run or don't run certain programs? I had big overheating problems, which I finally solved by installing Flashblock on Firefox. It was a case of too many tabs plus flash not running well in Linux. Before I discovered Flashblock, I took to stopping whatever applications were using the most CPU% according to my task manager, which was usually Firefox (in the task manager, right click - stop, so I could easily restart again the same way). The temperature would drop very quickly. Chris On Tue, Feb 2, 2010 at 20:31, Ken Foskey kfos...@tpg.com.au wrote: On Tue, 2010-02-02 at 14:24 +1100, Mark Walkom wrote: Well the grease is needed as it facilitates a higher efficiency of heat transfer from the chip to the heatsink. Is this a laptop or a desktop PC? What are the CPU and GPU chips? Desktop. The CPU fan has been removed and replaced twice. Under load it jumps from 30 to 40 and with a hot ambient (no aircon at all) climbs to 80 and stops. Right now sitting on 29 and 26. The Nvidia card has a lot of cowling around the fans so I wonder how clogged it will be. Previously I had carpet and was in Campsie which was bad for dust. In summary: - I will try and clean the heatsink on the Nvidia without removing it and no worry too much. - I will clean off grey goo on CPU and replace it with a thermal paste. Thanks Ken -- SLUG - Sydney Linux User's Group Mailing List - http://slug.org.au/ Subscription info and FAQs: http://slug.org.au/faq/mailinglists.html -- Chris Watkins Appropedia.org - Sharing knowledge to build rich, sustainable lives. blogs.appropedia.org community.livejournal.com/appropedia identi.ca/appropedia twitter.com/appropedia -- SLUG - Sydney Linux User's Group Mailing List - http://slug.org.au/ Subscription info and FAQs: http://slug.org.au/faq/mailinglists.html
[SLUG] Overheating
My computer crashed today and I have finally apt-get install sensors-applet I found out that my temperature is exceeding 80 on both CPUs under load and is always sitting at 76 for the GPU I have pulled off and cleaned the fan for the CPU but I have not done anything about the grease. Will this make a lot of difference? Thanks Ken -- SLUG - Sydney Linux User's Group Mailing List - http://slug.org.au/ Subscription info and FAQs: http://slug.org.au/faq/mailinglists.html
Re: [SLUG] Overheating
Well the grease is needed as it facilitates a higher efficiency of heat transfer from the chip to the heatsink. Is this a laptop or a desktop PC? What are the CPU and GPU chips? On 31 January 2010 20:32, Ken Foskey kfos...@tpg.com.au wrote: My computer crashed today and I have finally apt-get install sensors-applet I found out that my temperature is exceeding 80 on both CPUs under load and is always sitting at 76 for the GPU I have pulled off and cleaned the fan for the CPU but I have not done anything about the grease. Will this make a lot of difference? Thanks Ken -- SLUG - Sydney Linux User's Group Mailing List - http://slug.org.au/ Subscription info and FAQs: http://slug.org.au/faq/mailinglists.html -- SLUG - Sydney Linux User's Group Mailing List - http://slug.org.au/ Subscription info and FAQs: http://slug.org.au/faq/mailinglists.html
Re: [SLUG] Overheating
Ken Foskey wrote: My computer crashed today and I have finally apt-get install sensors-applet I found out that my temperature is exceeding 80 on both CPUs under load and is always sitting at 76 for the GPU I have pulled off and cleaned the fan for the CPU but I have not done anything about the grease. Will this make a lot of difference? Thanks Ken 76 for the GPU isn't uncommon, they run pretty hot as a rule. what is the case temperature, if you can post photos of inside your box along with specs on the components people can probably advise better. you only need the grease if you have taken the heatsink off. check that the heatsink is properly seated, with intel CPU fans sometimes the heatsink can click and feel like its in place but infact its not doing much. They are very much not a zero force item, if your not freaking about breaking something when you push the pins in your probably not pushing hard enough. (although I am a big wuss when it comes to leaning on a screwdriver over a $200 motherboard ;-) -- SLUG - Sydney Linux User's Group Mailing List - http://slug.org.au/ Subscription info and FAQs: http://slug.org.au/faq/mailinglists.html
Re: [SLUG] Overheating
I think youll find that this grease is actually a special highly thermal conductive fluid - which is designed to improve contact between the cpu and the heatsink Check that the cpu fan is working, (cables could be blocking it), also examine the air flow through your case. You could consider buying an aftermarket heatsink and cpu fan. Dean Ken Foskey wrote: My computer crashed today and I have finally apt-get install sensors-applet I found out that my temperature is exceeding 80 on both CPUs under load and is always sitting at 76 for the GPU I have pulled off and cleaned the fan for the CPU but I have not done anything about the grease. Will this make a lot of difference? Thanks Ken -- http://fragfest.com.au -- SLUG - Sydney Linux User's Group Mailing List - http://slug.org.au/ Subscription info and FAQs: http://slug.org.au/faq/mailinglists.html
Re: [SLUG] Overheating
On 02/02/10 14:35, Jake Anderson wrote: 76 for the GPU isn't uncommon, they run pretty hot as a rule. what is the case temperature, if you can post photos of inside your box along with specs on the components people can probably advise better. I tend to agree — just running Compiz on this box causes my GPU to run pretty hot. My GeForce 7900 GS is sitting at 65°C over here, according to nvidia-settings. Ken, when you take the heatsink off the CPU, it can actually *worsen* the heat conductivity if you don't re-apply the thermal paste (what I presume you meant by grease) afterwards, because when it's re-seated, it won't be contacting properly and thus not transferring heat as efficiently. signature.asc Description: OpenPGP digital signature -- SLUG - Sydney Linux User's Group Mailing List - http://slug.org.au/ Subscription info and FAQs: http://slug.org.au/faq/mailinglists.html
