Originally Posted by c2thew
here's a dumb question.
how does a cpu chip know when it is stable at higher overclock frequencies? Most of you know that i've been struggling to overclock to 4.8ghz on air with a delidded chip but have encountered BSOD until i lower the speed down to 4.6ghz and even then I get occasional BSOD's. It seems that stability comes with temperature throttles when the cpu chip is under load up until the chip reaches of which ivy bridge is 105 degrees celsius. So my question is what is stopping someone from putting 55 in the frequency that runs on air? will the operating system not handle the bios overclock? Or does a computer crash because of the thermal limits of the chip/chip degradation? Is it the actual physical chip/hardware that determines the limitation? i.e. good chips/bad chips based on production/quality control (costa rica vs malysia ivy chips).
i'm a novice here so i'm still getting to understand what everyone else is doing. From what i've seen, most people just tweak the cpu voltage (vcore) to either a fixed, offset for high overclocking but leave C states on in order to recapture the energy costs of not having your chip running at 5ghz whenever you power on your computer and surf the internet/, game, edit/handbrake videos, or do cpu folding. But the rest of the settings besides setting the ram timings seem to be left alone in the bios (fan speeds exception). i know that the bios layout/settings are different for every motherboard manufacturer but the core changeable items are still there.
so i suppose what i'm trying to get at is: is a high overclock dependent on ALL cpu core components? cpu chip, motherboard, memory or also on the peripheral components: video card, power supply, sata connectors, internal memory controllers (though i think that's motherboard related).
just thinking out loud.
i think so yes..dependent on all components,
the higher the oc, the more important it gets to finetune all settings in the bios,
it didnt stop me using 55 multi, and do some benching on air, but my mobo has a max 1.85V vcore limit,
so i had to disable 2 cores and HT to get the 5.5ghz running, because of the 1.85V limit..
the OS doesnt limit in any way, except if theres already something wrong with it, because of to many bsod etc..
thermal limit is the same for any oc, if it hits max, it will throttle, or shut down cores etc..
the quality of the components used on the mobo can limit your oc's also..
"how does a cpu chip know when it is stable at higher overclock frequencies? "
it doesnt, the owner knows
..lol ...jkEdited by VonDutch - 1/8/13 at 1:48am