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Trouble overclocking my Ivy - Page 3

post #21 of 27
Thread Starter 
Okay let me rephrase the question. Intel recommendation is 5% lower than 1.65v that should be the max you set for the ram. I know of electronics that will take up to 10% above recommended and probably perform better than recommended and live to grow white heatspeaders (ya that old). I also know of very sensitive devices such as micro-controllers that you have to be very strict with voltage mostly regulated by vregs such as LM317. As far as overvoltage tolerance is concerned I haven't anything on the LM317 vreg operates, just data about what strict voltages you can get from it.

Now I don't have anything on ivy chip as far as tolerance of the intergrated electronics used inside to fabricate it. So might anyone know which category this chip actually falls, is it in the highly sensitive or 110% batter proof electronics?
post #22 of 27
LM317 isn't even what you call "voltage regulators for sensitive devices" by a far shot ... It's a jellybean voltage regulator
1% is not enough. Some digital parts need 0.3% regulation
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post #23 of 27
Thread Starter 
Quote:
Originally Posted by DaveLT View Post

LM317 isn't even what you call "voltage regulators for sensitive devices" by a far shot ... It's a jellybean voltage regulator
1% is not enough. Some digital parts need 0.3% regulation

Then does that mean that micro-controllers are pretty rugged? We were using them when I was back in campus and they only worked optimally with that particular voltage regulator any other power source we tried would mess them up. What 1% are you referring to in my statement? Am trying to compare sensitive devices vs rugged ones and was meant to lead anyone towards an answer whether 1.65v is good for ivy
post #24 of 27
Quote:
Originally Posted by TLM-610 View Post

Then does that mean that micro-controllers are pretty rugged? We were using them when I was back in campus and they only worked optimally with that particular voltage regulator any other power source we tried would mess them up. What 1% are you referring to in my statement? Am trying to compare sensitive devices vs rugged ones and was meant to lead anyone towards an answer whether 1.65v is good for ivy
Yeah if that was your point that it's true. 1% was in reference to sensitive electronics.
1% is not nearly precision but it's for the chips that really need 0.5% accuracy. "Any other power source" might have a true output voltage that is not on the display or also dropout voltage in the wires could be considered but then 8-bit uC's dont draw much power if any at all tongue.gif Unless you step up to the STM32F4 board i have, it draws 100mA from a USB port tongue.gif and that's with it idling
when i run some code it spikes up to 500mA ... talk about energy efficient it isn't but it's a powerful beast uC tongue.gif
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post #25 of 27
I've yet to encounter a chip that didn't have a fairly wide operating voltage range. Microchip PIC's it's something like +10% is still OK. There's probably a bunch of circuitry internal to the package that cleans up the input power anyways.

All bets are off if we're talking about a chip that needs a reference voltage though, for analog-digital conversion or whatever.
post #26 of 27
Quote:
Originally Posted by dr/owned View Post

I've yet to encounter a chip that didn't have a fairly wide operating voltage range. Microchip PIC's it's something like +10% is still OK. There's probably a bunch of circuitry internal to the package that cleans up the input power anyways.

All bets are off if we're talking about a chip that needs a reference voltage though, for analog-digital conversion or whatever.
That's what i was talking about. ADCs need very very accurate reference voltages and some digital stuff NEEDS very accurate voltages for the supply rail
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post #27 of 27
Thread Starter 
Quote:
Originally Posted by DaveLT View Post

Yeah if that was your point that it's true. 1% was in reference to sensitive electronics.
1% is not nearly precision but it's for the chips that really need 0.5% accuracy. "Any other power source" might have a true output voltage that is not on the display or also dropout voltage in the wires could be considered but then 8-bit uC's dont draw much power if any at all tongue.gif Unless you step up to the STM32F4 board i have, it draws 100mA from a USB port tongue.gif and that's with it idling
when i run some code it spikes up to 500mA ... talk about energy efficient it isn't but it's a powerful beast uC tongue.gif

Wow! That is some real power fluc!

Quote:
Originally Posted by dr/owned View Post

I've yet to encounter a chip that didn't have a fairly wide operating voltage range. Microchip PIC's it's something like +10% is still OK. There's probably a bunch of circuitry internal to the package that cleans up the input power anyways.

All bets are off if we're talking about a chip that needs a reference voltage though, for analog-digital conversion or whatever.


Ya very true, I saw that when I was studying some wave forms with an oscilloscope in a multi-stage ADC for a water tank level sonic detector. I also have never seen an intergrated circuit without stages of signal conditioning as you say which is also highly likely to appy to ivy bridge considering the experience that many have had with it (some abuse).

Quote:
Originally Posted by DaveLT View Post

That's what i was talking about. ADCs need very very accurate reference voltages and some digital stuff NEEDS very accurate voltages for the supply rail

So essentially what you guys are saying is that there are barricades of defense circuits before getting to the target accounting for ruggedness of microchips allowing some level of abuse, right?
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