On Fri, Sep 21, 2007 at 12:20:07PM -0700, Chuck Swiger wrote: > The CPU itself has a thermal control circuit which puts the CPU into a > reduced duty cycle (ie, it reduces the core voltage and stops the CPU for > something like 10 clocks, and then allows one clock through) and continues > to run the CPU at about 10% of normal workload until the temperature falls > below the critical threshold. There's a good document here: Are you referring to the Core 2 Duo C1E (Enhanced Halt State) processor feature or the EIST feature? I'm guessing C1E. Note that for C1E to work, it has to be enabled/available in the BIOS. I'll add that C1E is really great, dropping temperatures during idle periods by about 5-6C from what I've seen. The additional C[234]E states (at least for desktops) don't provide much benefit, but C1E definitely does. -- | Jeremy Chadwick jdc at parodius.com | | Parodius Networking http://www.parodius.com/ | | UNIX Systems Administrator Mountain View, CA, USA | | Making life hard for others since 1977. PGP: 4BD6C0CB |Received on Fri Sep 21 2007 - 17:33:40 UTC
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