Date: Thu, 13 Feb 2020 11:35:18 -0500 From: mike tancsa <mike@sentex.net> To: Peter Jeremy <peter@rulingia.com> Cc: freebsd-current <freebsd-current@freebsd.org> Subject: Re: Which AMD CPUs are supported -- temperature Message-ID: <048f31ec-e025-e668-d941-77d5a6c9ca96@sentex.net> In-Reply-To: <20200213072212.GB79914@server.rulingia.com> References: <ad5a6a2d15376e09855c18cac23e92fa@udns.ultimatedns.net> <2e023769-a71a-b83b-0050-6fef5f3c499d@sentex.net> <20200213072212.GB79914@server.rulingia.com>
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On 2/13/2020 2:22 AM, Peter Jeremy wrote: > On 2020-Feb-12 15:23:51 -0500, mike tancsa <mike@sentex.net> wrote: >> Not sure about the older Athlon CPUs, but the 2 generations of Ryzen's I >> have seem correct as well as an APU >> >> CPU: AMD GX-412TC SOC (998.17-MHz K8-class CPU) > OTOH, I'm not confident about temperatures on my APU. The publicly > >> And on a fanless APU >> >> # sysctl -a dev.cpu.0.temperature >> dev.cpu.0.temperature: 62.6C >> >> # sysctl -a dev.amdtemp.0.core0.sensor0 >> dev.amdtemp.0.core0.sensor0: 63.1C > At what ambient temperature? I see a similar value from my (idle) APU3 > but don't believe the (implied) ~35K junction-to-ambient difference. Actually, it does seem a bit high. This is read from a PCEngines APU3. Since the CPU dissipates heat off the bottom metal case, I cant point my thermal laser temp reader directly at the CPU. Reading the temp off the top of the mother board with the top of the case off, I cant find any spots hotter than 35C... So 62C is probably a lot higher than it actually is. ---Mike
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