ASUS Motherboard Temperature
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Posted by Goff on March 7, 2008, 4:34 pm
Please log in for more thread options running an AMD 3700 ?? I have ASUS PC Probe and the default threshold setting for the MB is 75C which seems WAY too high (But if I knew it was too high, I wouldn't be asking, right?) TIA | |||||||||||||
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Posted by kony on March 7, 2008, 6:37 pm
Please log in for more thread options 75C is fine, it's not a question of what is too high but what is instable at any particular temp and voltage which will vary based on the FSB speed and voltage settings you use (if overclocking, or depending on installed processor), and whether this combination of things is stable or not. Use your preferred application to test for stability, and if you find it gets instable before reaching 75C, then adjust the temp threshold down to a little before the instable temp range. | |||||||||||||
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Posted by Paul on March 7, 2008, 7:46 pm
Please log in for more thread options kony wrote:
> wrote:
> >> What would be a reasonable MB temperature range (C) for an ASUS MB
>> running an AMD 3700 ?? I have ASUS PC Probe and the default >> threshold setting for the MB is 75C which seems WAY too high (But if I >> knew it was too high, I wouldn't be asking, right?) TIA >
> 75C is fine, it's not a question of what is too high but > what is instable at any particular temp and voltage which > will vary based on the FSB speed and voltage settings you > use (if overclocking, or depending on installed processor), > and whether this combination of things is stable or not. > > Use your preferred application to test for stability, and if > you find it gets instable before reaching 75C, then adjust > the temp threshold down to a little before the instable temp > range. Looking back at the OP's posting history, he was in the process of replacing a fan on a heatsink in his system. It sounds like this question is being asked, after the change of cooling hardware. It may mean that thermal paste wasn't fitted on the Northbridge heatsink, during reassembly. The previous threads didn't identify the motherboard either. So there are a few details missing from this question, and filling in those details might make a difference to the answer. 75C is a pretty high temp. Some chips can take 99C, as listed in their spec sheet. (Intel lists the max temp on their chips. We'd have to guess for other brands.) On some chipsets, running those kinds of temps, causes the SATA ports to become flaky. So it really depends what interfaces the chip has, as to what the consequences might be. The Nvidia "all-in-one" chipsets, have the Northbridge and Southbridge inside the same chip, and that would be an example of a chip that might develop flaky SATA ports if you get it too hot. A crash caused by memory corruption, would also be a sign it was too hot. Paul | |||||||||||||
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Posted by Goff on March 7, 2008, 7:54 pm
Please log in for more thread options >
> >kony wrote: >> wrote:
>> >>> What would be a reasonable MB temperature range (C) for an ASUS MB
>>> running an AMD 3700 ?? I have ASUS PC Probe and the default >>> threshold setting for the MB is 75C which seems WAY too high (But if I >>> knew it was too high, I wouldn't be asking, right?) TIA >>
>> 75C is fine, it's not a question of what is too high but >> what is instable at any particular temp and voltage which >> will vary based on the FSB speed and voltage settings you >> use (if overclocking, or depending on installed processor), >> and whether this combination of things is stable or not. >> >> Use your preferred application to test for stability, and if >> you find it gets instable before reaching 75C, then adjust >> the temp threshold down to a little before the instable temp >> range. >
>Looking back at the OP's posting history, he was in the process >of replacing a fan on a heatsink in his system. It sounds >like this question is being asked, after the change of >cooling hardware. It may mean that thermal paste wasn't >fitted on the Northbridge heatsink, during reassembly. > >The previous threads didn't identify the motherboard >either. So there are a few details missing from this >question, and filling in those details might make a >difference to the answer. > >75C is a pretty high temp. Some chips can take 99C, as >listed in their spec sheet. (Intel lists the max >temp on their chips. We'd have to guess for >other brands.) > >On some chipsets, running those kinds of temps, causes >the SATA ports to become flaky. So it really depends >what interfaces the chip has, as to what the consequences >might be. The Nvidia "all-in-one" chipsets, have >the Northbridge and Southbridge inside the same chip, >and that would be an example of a chip that might >develop flaky SATA ports if you get it too hot. > >A crash caused by memory corruption, would also be >a sign it was too hot. > > Paul You are correct concerning the CPU Heatsink/fan. The board is an ASUS A8N-SLI , NForce-4 chipset, one 6600GT, and an AMD 3700+ CPU. ASUS PC Probe currently reads, at idle, and without "Cool 'n Quiet; CPU Temp - 29C/84F MB Temp - 35C/95F Ambient temp is 65F inside. | |||||||||||||
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Posted by Paul on March 7, 2008, 9:10 pm
Please log in for more thread options Goff wrote:
>>
>> kony wrote: >>> wrote:
>>> >>>> What would be a reasonable MB temperature range (C) for an ASUS MB >>>> running an AMD 3700 ?? I have ASUS PC Probe and the default >>>> threshold setting for the MB is 75C which seems WAY too high (But if I >>>> knew it was too high, I wouldn't be asking, right?) TIA >>> 75C is fine, it's not a question of what is too high but >>> what is instable at any particular temp and voltage which >>> will vary based on the FSB speed and voltage settings you >>> use (if overclocking, or depending on installed processor), >>> and whether this combination of things is stable or not. >>> >>> Use your preferred application to test for stability, and if >>> you find it gets instable before reaching 75C, then adjust >>> the temp threshold down to a little before the instable temp >>> range. >> Looking back at the OP's posting history, he was in the process
>> of replacing a fan on a heatsink in his system. It sounds >> like this question is being asked, after the change of >> cooling hardware. It may mean that thermal paste wasn't >> fitted on the Northbridge heatsink, during reassembly. >> >> The previous threads didn't identify the motherboard >> either. So there are a few details missing from this >> question, and filling in those details might make a >> difference to the answer. >> >> 75C is a pretty high temp. Some chips can take 99C, as >> listed in their spec sheet. (Intel lists the max >> temp on their chips. We'd have to guess for >> other brands.) >> >> On some chipsets, running those kinds of temps, causes >> the SATA ports to become flaky. So it really depends >> what interfaces the chip has, as to what the consequences >> might be. The Nvidia "all-in-one" chipsets, have >> the Northbridge and Southbridge inside the same chip, >> and that would be an example of a chip that might >> develop flaky SATA ports if you get it too hot. >> >> A crash caused by memory corruption, would also be >> a sign it was too hot. >> >> Paul >
> You are correct concerning the CPU Heatsink/fan. The board is an ASUS > A8N-SLI , NForce-4 chipset, one 6600GT, and an AMD 3700+ CPU. > ASUS PC Probe currently reads, at idle, and without "Cool 'n Quiet; > > CPU Temp - 29C/84F > MB Temp - 35C/95F > Ambient temp is 65F inside. > Possible replacements: 1) Go to the estore.asus.com and get an exact replacement. Only an option for residents of the USA. http://estore.asus.com/shop/item.asp?itemid=231&catid=134 ("Out of stock until first week of April.") 2) Thermalright HR-05-SLI Copper Heatsinks only - Retail http://www.newegg.com/Product/ProductReview.aspx?Item=N82E16835109131 That is a heatpipe based cooler, intended for use with Northbridge chips. The "SLI" designation comes from the ability to orient the fin assembly, so it doesn't bump into a video card. Thermalright makes a second model, with different mechanical details. The cooler could benefit from having a fan mounted next to it. If the chipset was still too hot, more air flow over the fins would help. Since the clip isn't apparently very good, you may want to visit the hardware store, and improve the design a bit. 3) MCX-159CU http://www.swiftnets.com/products/mcx159-CU.asp This is a Northbridge cooler, with an included fan. Fan is 18dBA, which is below 30dBA or so audibility figure. Swiftech products usually have nice surface finish on the base of their coolers. There are no heatpipes in that unit, but yet it is rated with a theta_R thermal resistance of 1.25C/W. If the chipset was 20W, that would mean the chip temp would be 35C (case air temp) plus 1.25*20 = 60C as a rough estimate. For a cooler like the 159, you'd want to verify the corner to corner spacing of the mounting holes. The brackets on the 159 have limited adjustment range, so you pretty well need the standard hole spacing to be able to use it. 4) I would not recommend the Zalman NB47 or similar 35mm square passive coolers for a chip like that Nvidia one. The problem is, the theta_R on those coolers is too poor for comfort. A more substantial cooler is required. And preferably with some air movement. On some heatsinks, 200LFM of air, improves cooling performance by a factor of three, and should not be ignored. As you can see in the calculation in (3), it still runs pretty hot with a 35mm cooler without heatpipes. The HR-05 comes with some thermal paste, and a thin layer should be applied to the top of the chip, once it has been cleaned with some isopropyl alcohol. Thermal paste compensates for the unevenness of the surfaces, and paste is a better conductor of heat, than air. By displacing any air between the two surfaces, you get better cooling performance. When the motherboard is manufactured, sometimes they put a gob of material in there, and too much of it, acts as an insulator. http://c1.neweggimages.com/NeweggImage/productimage/35-109-131-05.jpg There are various discussions about fans and cooling for that motherboard, on the Asus forums. There are too many posts for me to read right now, and 1418 threads might take me the rest of the day. http://vip.asus.com/forum/topic.aspx?board_id=1&model=A8N-SLI&SLanguage=en-us HTH, Paul | |||||||||||||
>running an AMD 3700 ?? I have ASUS PC Probe and the default
>threshold setting for the MB is 75C which seems WAY too high (But if I
>knew it was too high, I wouldn't be asking, right?) TIA