Date: Thu, 17 Feb 2011 22:07:36 -0300 From: Mario Lobo <lobo@bsd.com.br> To: Chuck Swiger <cswiger@mac.com> Cc: freebsd-questions@freebsd.org Subject: Re: CPU heating! Message-ID: <201102172207.37004.lobo@bsd.com.br> In-Reply-To: <9E70BA4D-8385-43F1-9CAA-90C46FC8F8BA@mac.com> References: <201102131852.16453.mlobo@digiart.art.br> <201102172006.35192.lobo@bsd.com.br> <9E70BA4D-8385-43F1-9CAA-90C46FC8F8BA@mac.com>
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On Thursday 17 February 2011 21:20:57 Chuck Swiger wrote: > On Feb 17, 2011, at 3:06 PM, Mario Lobo wrote: > >> Most computer cases are designed with front-to-back airflow (ie, intake > >> fans in the front, exhaust fans and the PSU in the back) and cool more > >> effectively with the case on.... > > > > Well, in my case, with the "BEFORE" situation, if I had the side case > > cover on, the temps would be even higher ! > > Are they? Well, that suggests something could be wrong with your case > ventilation-- perhaps a stuck (or even reversed) fan. > They are neither reversed nor stuck. I am truly paranoid about that. I have a front fan pulling in and a back fan pushing out. I even have one of the front device covers out since I bought this CPU. That's the air flow since day one. I can't say that nothing changed inside the machine since I added a HD to it but the heating came long after that. > I know, it's not as interesting as the possibility that different versions > of FreeBSD present different CPU load, but if you aren't controlling for > major factors like the case being opened or closed, or using different > coolers, then there's little point in worrying about whether your > load-testing of the software is accurate. I didn't mean to imply that the different versions of FBSD was THE cause of heating. But the fact is that it started to happen after the upgrade. It's probably just a coincidence. The fact is that downgrading to 8.1 improved the cooling. Very little ( -1 degree, that's true) but improved nonetheless. You're certainly right. My load testing method isn't accurate but my observations are. Even if your measuring instrument is not accuratly calibrated, the absolute value of the measurement can not be trusted, but the difference of two measurements with the same instrument can. The instrument being my hardware in this case. I pointed the difference in load between 8.1 and 8.2 when compiling, as "something I noticed". Just that. -- Mario Lobo http://www.mallavoodoo.com.br FreeBSD since 2.2.8 [not Pro-Audio.... YET!!] (99% winblows FREE)
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