Date: Thu, 8 Jan 2004 12:41:16 -0600 (CST) From: "Jon Noack" <noackjr@compgeek.com> To: "Kevin Oberman" <oberman@es.net> Cc: Alexandre Sunny Kovalenko <alex.kovalenko@verizon.net> Subject: Re: FreeBSD 5.2-CURRENT on HP Omnibook 6000 - ACPI problem Message-ID: <10984.64.1.99.131.1073587276.squirrel@www.noacks.org> In-Reply-To: <20040108171214.33CAE5D08@ptavv.es.net> References: Message from Alexandre "Sunny" Kovalenko<Alex.Kovalenko@verizon.net> <20040107221254.74570411.Alex.Kovalenko@verizon.net> <20040108171214.33CAE5D08@ptavv.es.net>
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Kevin Oberman wrote: > This is not even ACPI. Many motherboards for modern P4 and K7 chips do a > very low-level BIOS shutdown on over-temp. See ASUS, ABIT, or most any > other mobo for a fairly useless blurb on this. > > From ABIT: > "ABIT ThermalGuard Technology is a special designed for ABIT MB prevents > CPU burning down by hardware cooling malfunction. With unique ABIT > Hardware Monitoring chip and CPU thermal detector, ThermalGuard > Technology can protect the better safety of all CPUs and customers' ABIT > motherboards. When the temperature of CPU is over the default threshold > degree, system immediately shut down by ABIT ThermalGuard It's > great for preventing the lost of customers' investment. Unlike > other manufactories, which use BIOS or software to delivery same > feature. ABIT ThermalGuard Technology is much more reliable because it > is hardware-controlled and uninterruptible." > > So, if the fan fails to turn on, it is perfectly possible that the > system will power off regardless of ACPI. While ABIT makes it sound > exclusive, it looks pretty much the same as ASUS "CPU Overtemp Protection > System (COPS)" and Gigabyte calls it "Anti-Burn" IMHO, this all stems from a Tom's Hardware article: http://www20.tomshardware.com/cpu/20010917/index.html Further coverage: http://www20.tomshardware.com/column/20011029/index.html A respected hardware review site publishes a spectacular video of an Athlon literally vaporizing itself (when the heatsink/fan is taken off during a Quake III timedemo) and suddenly everyone gets all worked up about it (while the P4 throttles itself back and just strolls along at ~12 fps). In any case, it was extraordinarily public coverage, and manufacturers (especially their marketing people) have been in overdrive on it ever since. Jon Noackhome | help
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