i have an big arguement with a person and he said by underclocking the CPU it will post harm to the motherboard.because what i said is running a CPU at 100x6 with lower vcore,but everything on normal.but he said the NB will suffer as the NB is running a higher(normal) voltage thats actually required for the speed.i said back to him the voltage on the NB is still running with in spec even though the bus speed isnt.i told him that only overclocking and overvolting will cause possible harm to the parts.by running them lower is fine.
so what you guys think.that running at lower speed(UNDERCLOCKING) is dangerous like overclocking?and will cause damage as such?
basically his point is running excess(stock) voltage for lower speed(out of spec) is a dangerous.
and my point is the chipset itself is running on stock voltage and its fine even if the bus speed 400mhz is running lower then the state natively supported 533-1333mhz
Message edited by iluvgillgill on 05-03-2008 at 08:23:24 PM
I'd say your right. Your motherboard runs at a designed voltage, it doesn't matter how low the bus speed goes it still requires the same voltage to create the frequency.
On a CPU you under clock and lower the voltage to save power and limit the heat. I'm guessing you could under volt the northbridge slightly, but i think it'd need the stock voltage to carry out it's normal job of talking to the FSB, RAM, PCI-E and then to stay in contact with the southbridge.
However, I'm no expert maybe someone else can talk more technical jargon and make sense?
thank you close_deal.thats exactly my point.i also pointed out that if a chipset is rated to run at 1333 natively then it doesnt mean anything lower is impossible or dangerous as he said.
im sure you cant undervolt any parts apart from CPU and the rest on "Normal" or "default"
Underclocking is by no means dangerous. Undervolting is by no means dangerous. Its just unstable.
FSB underclocking and multiplier underclocking is completely stable but FSB underclocking will result in a bandwidth degradation. Only FSB underclocking will have issues if underclocked too much (bandwidth problem). Underclocking is completely safe but can be unstable causing random freezes or stuff like that. Its like feeding a person too little to do their work.
If you underclock yours to the extreme expect your motherboard not to post. Remove the CMOS battery and you'll be fine. There is a technical explanation for this but I won't discuss it here (I don't understand it either). It involves not having enough volts, so the processor draws more power and the motherboard doesn't post. Its completely safe, nothing blows up. I have gotten my BE-2400 @1.7GHZ @ 0.5V-0.8V but it was pretty unstable with 0.5V only able to post and 0.8V getting up to Windows but wouldn't start. 0.944V is the sweet spot for mine.
Underclocking and undervolting actually increase the lifespan of your processor and motherboard by slowing down electrical degradation (less energy to wreck silicon).
Any Questions?
thats what i pointed out to him.by running a lower speed does not mean dangerous by any mean.and lets put the performance degrade on the side.but he use 3ghz@1.7V being dangerous.yes to that case what he said is correct,but when underclock the NB/FSB to lower but with stock voltage wouldnt cause a harm because that chipset is design to take that voltage regardless what speed as long as its stable(of course more voltage for higher speed).
i wonder why he still not post in this thread yet.probably we all proved him wrong.lol
. Tiz a weird thing to argue about , but still it beats clock watching for my new case 
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