On Wednesday 07 Aug 2013 14:55:52 Vojtěch Zeisek wrote:
Hi, thanks!
Dne St 7. srpna 2013 07:28:12, Malcolm napsal(a):
On Wed 07 Aug 2013 01:25:08 PM CDT, Vojtěch Zeisek wrote:
Hi, one hopefully short technical question. I have Intel Core i7-3630QM Processor, http://ark.intel.com/products/71459 having 4 cores, 8 threads and running on clock speed 2.4 GHz. It should be automatically overclocked to 3.4 GHz in case of need, but I wonder how this works. Does it require any communication with kernel or even with user? All HW listing tools say it is 2.4 GHz processor, so I wonder how to make it 3.4 GHz one. ;-)
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Nowhere any note about 3.4 GHz frequency... Why? Have a nice day, Vojtěch
Hi I'm guessing turbo boost is activated in your system BIOS?
No, there is no such setting in BIOS.
BIOS is where intel turbo boost is managed (i.e. enabled or disabled) the option will be there and only there, usually there is a sub menu under the main CPU/bus/RAM frequency control options with the CPU specific features to enable/disable in my case it's something like: Overclocking > Advanced CPU Features or vice versa I forget which way round. In any case the intel turbo boost wont show in usual monitoring tools as it's a special state of the cpu outside of normal frequency controls. Also it's just applied to a single core at any time and not always applied. It takes a particular set of circumstances to kick in, something like all other cores at idle state with a high load on a single threaded application. So it's almost never running if all your applications are multi-threaded (or even a single running multi-threaded app) because the automatic cpu scaling will not allow the cpu to cross it's TDP threshold. If you are curious you'll need something like the turbostat utility to have a look 'under the hood' and using that can you sometimes see the short bursts of turbo boost. I forget which package that's bundled with if it's not installed by default. In summary, set it and forget it ;) Cheers the noo, Graham -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org To contact the owner, e-mail: opensuse+owner@opensuse.org