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Is VID same as vcore? - Page 2

post #11 of 17
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Quote:
Originally Posted by mikeo01 View Post

Ah that makes sense tongue.gif

1.404 vcore at 4.88Ghz is seriously impressive. Great result thumb.gif

Thanks after getting a better cooler I may run it at that frequency. My vdroop within Windows is around .04v. What's funny is that when there's a load on the cpu the vcore lowers by .04v but when it's idle the vcore within windows matches the vcore set in the bios. My LLC is set to Regular as the only other two options are Auto and Extreme.
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post #12 of 17
That's actually a good thing in a way. It's providing a consistent voltage to your chip. Down side is, I bet if you set your LLC it'll overshoot by a lot.

You should also be able to overcome that by using an offset voltage so it drops under idle and provides a consistent voltage at load smile.gif
post #13 of 17
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Quote:
Originally Posted by mikeo01 View Post

That's actually a good thing in a way. It's providing a consistent voltage to your chip. Down side is, I bet if you set your LLC it'll overshoot by a lot.

You should also be able to overcome that by using an offset voltage so it drops under idle and provides a consistent voltage at load smile.gif
That's the screw up. I don't have offset voltage in my bios frown.gif
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post #14 of 17
There's no offset? That's strange I thought most boards have it. That's a bummer!
post #15 of 17
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Quote:
Originally Posted by mikeo01 View Post

There's no offset? That's strange I thought most boards have it. That's a bummer!
Exactly. So all I'm left with is a higher vcore at idle and a lower vcore when it's at full load. At 4Ghz during prime 95 most of the time my vcore was at 1.26v.
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post #16 of 17
Quote:
Originally Posted by jason387 View Post

Okay so a lower VID would do better for overclocking. I've disabled cool and quiet as it did give some trouble with it on. So far I've overclocked to 4.4Ghz with 1.38v but temps get quite high.

Sorry, I edited my post. I thought you had the really high VID of 1.4, but you are on the opposite end with a really low VID. Low VID means better OC headroom and is best for LN2 overclocking because your processor does in fact get much hotter than most as you go up in vcore. High VID numbers are much better for air overclocking because they will run cooler than other processors with lesser VID.

Low VID = high leakage, high VID = low leakage.
low VID = more OC headroom and reaches high frequencies but runs hot, so best for LN2 or other sub-zero cooling
high VID = less OC headroom from already high voltage, but less heat issue so better for air cooling systems.

This might be confusing to some, and it is a bit hard for me to explain it as well. but try and think of it like this. Your CPU is a 95w TDP design right? My CPU is also an FX-6300 with a 95w TDP smile.gif But, my VID (stock vcore) is 1.32v. So in my system 95 watts is dissipated with 1.32 volts. Now look at your processor, your VID is 1.2375. Which means 95 watts is dissipated with only 1.2375 volts. We are still both the same TDP, but you are leaking more voltage and so the system is drawing more amperage to work the same. This higher amperage brings a lot higher heat. voltage leakage in the processor also increases as temperatures increase, which means exponentially hotter and hotter temps as you try to overclock more. In the same way, if you lower the temperature by a lot it helps there to be less leakage, which allows the processor to run much higher MHz at the same voltage it had before simply because it isnt leaking as much, makes it great for liquid nitrogen and liquid helium overclocking runs for world records. Most big time overclockers that are sponsored get a whole tray of CPUs, they quickly boot with each one and write the VID down for each processor. They then junk any processors over a certain VID and concentrate on just the specific ones they found with the low VID they are looking for. They do this because finding the VID of all the CPUs in their tray they know those lower VID CPU's have a much greater chance of getting them to the highest frequencies, while the high VID chips top out far lower in speed when subjected to subzero cooling.

This doesnt mean all low VID processor all overclock higher at max than CPUs of a higher VID, there are good and bad batches of both. A good batch with a VID of 1.3 can usually run faster than a bad batch of processors with 1.2 VID. It is just a good general rule of thumb and some interesting stuff on how and why processors are the way they are when it comes to overclocking.



Quote:
Originally Posted by jason387 View Post

Exactly. So all I'm left with is a higher vcore at idle and a lower vcore when it's at full load. At 4Ghz during prime 95 most of the time my vcore was at 1.26v.

that is actually a perfectly fine way to run it, even if it isnt the absolute best power draw optimized. At least you arent damaging your CPU with small voltage spikes from big LLC levels. Very nice overclock!
Edited by EniGma1987 - 8/14/13 at 1:19pm
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post #17 of 17
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Quote:
Originally Posted by EniGma1987 View Post

Sorry, I edited my post. I thought you had the really high VID of 1.4, but you are on the opposite end with a really low VID. Low VID means better OC headroom and is best for LN2 overclocking because your processor does in fact get much hotter than most as you go up in vcore. High VID numbers are much better for air overclocking because they will run cooler than other processors with lesser VID.

Low VID = high leakage, high VID = low leakage.
low VID = more OC headroom and reaches high frequencies but runs hot, so best for LN2 or other sub-zero cooling
high VID = less OC headroom from already high voltage, but less heat issue so better for air cooling systems.
that is actually a perfectly fine way to run it, even if it isnt the absolute best power draw optimized. At least you arent damaging your CPU with small voltage spikes from big LLC levels. Very nice overclock!

Thanks smile.gif. I'm quite pleased with the chip. Yes your right, temps rise like crazy once I raise the vcore but high clock speeds are possible.
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