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Date:      Fri, 25 Nov 2016 20:40:14 -0800
From:      Adrian Chadd <adrian.chadd@gmail.com>
To:        Jakub Lach <jakub_lach@mailplus.pl>
Cc:        FreeBSD Stable Mailing List <freebsd-stable@freebsd.org>
Subject:   Re: Bogus turbo mode with Intel(R) Core(TM)2 Duo CPU P9700 (2.80GHz)
Message-ID:  <CAJ-Vmoncy-m0fPYrRQZVphXMogHXWuZMSLSK9sv8fY7zp5uudQ@mail.gmail.com>
In-Reply-To: <1480133771286-6147461.post@n6.nabble.com>
References:  <1480133771286-6147461.post@n6.nabble.com>

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the acpi cpu frequency module just exposes the frequency lis given to
it by ACPI. If your ACPI table exposes the turbo boost frequency but
doesn't implement it on the backend, FreeBSD doesn't know. We just
obey what we're told. :)


-a


On 25 November 2016 at 20:16, Jakub Lach <jakub_lach@mailplus.pl> wrote:
> Hello,
>
> Since I'm running this CPU, I've noticed there is additional
> field in supported frequency (under heavy load)-
>
> dev.cpu.0.cx_supported: C1/1/1 C2/2/1 C3/3/57
> dev.cpu.0.freq_levels: 2801/35000 2800/35000 2450/30625 2133/23888
> 1866/20902 1600/15000 1400/13125 1200/11250 1000/9375 800/12000 700/10500
> 600/9000 500/7500 400/6000 300/4500 200/3000 100/1500
> dev.cpu.0.freq: 2801
> dev.cpu.0.temperature: 67,0C
>
> as far as I know, the +1 MHz mode is a turbo boost factory
> overclock, however this CPU does not support it. Anybody knows
> what's going on?
>
> I've previously had T9400 (2.53 GHz), there was no such thing listed
> and it was running slightly cooler under load, despite having higher
> TDP (however P9700 is a lot cooler when idle, as expected).
>
> Still, I don't think it is possible it's actually being overclocked?
>
>
>
> --
> View this message in context: http://freebsd.1045724.x6.nabble.com/Bogus-turbo-mode-with-Intel-R-Core-TM-2-Duo-CPU-P9700-2-80GHz-tp6147461.html
> Sent from the freebsd-stable mailing list archive at Nabble.com.
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