Internal PLL overvoltage.. what is it?

Jay85

Jay85

Jay85

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I noticed this enabling itself when i overclocked past 4.4ghz to 4.5ghz.

But what worries me more is that as soon as i run prime95 my voltage drops from the 1.294volts that i set in bios to 1.24volts! Does this PLL thing make my vcore drop?? Is it safe to leave it on or should i turn it off?


EDIT: Okay nevermind, i turned off PLL Overvoltage and it still drops... i've turned off all my power saving features including spread spectrum aswel so i have no idea what else is making it drop... The only thing that is left on is the EUP 2013.

45ghzat129v.jpg




Any help on this would be greatly appreciated as google isn't providing me with a clear cut answer...
 
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I also noticed that turning off power technology function completely disables my overclock no mattet what i set in bios... :S


EDIT: I Noticed that my core clock wasn't bang on 4.5ghz as you can see from the top image it sits at 4490mhz for some reason so i adjusted the base clock to 10030 which corrects the above clock to 4500mhz... is it okay to do this?


Haha sorry theres just so much to learn for intel overclocking over AMD overclocking!
 
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The clock speed being slightly off is normal, i do exactly what you do and bump the BCLK a tiny amount just to keep it on/above my target.

Regarding the voltage droop when at full load, this is also normal. The setting you're looking for to resolve this (if you want to resolve it that is, if it's stable when drooping then i'd leave it) is called Load Line Calibration (LLC) usually given in a % rating or Low, Medium, High, Very High, Extreme.

LLC will directly affect your temperatures, the higher the setting the less voltage droop you'll have at load and because of this the higher the temperatures will be.
Medium or High is the common setting. Though be careful, some boards (usually ASUS) are a bit heavy on the LLC and are more intensive than others.


My advise: LLC is used to solve stability issues at full load so stick with what you have at the moment if it's stable, it's natural for the voltage to drop at load.
 
as mentioned, it's called vdroop, when overclocking keep an eye on what CPU-Z says and if you get instability because of it then just bump the voltage up a tiny bit to counteract it

what you see in CPU-Z is more important than what you set it to in the bios
 
No need to mess with BCLK settings - just turn off spread spectrum and watch how you magically get the magic 4500Mhz number ;)
 
Right just to clear things up here:


1) I have PLL overvoltage disabled

2) Spread sprectrum is also disabled but did nothing to my overall overclock... so i still went for bumping the BCLK up to correct my overall overclock which from what i'm seeing is the correct way for me anyway.

3) my board has no access to LLC and max voltage bump for vcore is +0.06v which is nothing really.. so i'm stuck on 4.5ghz till i can get a higher end board. Shame really because i think i have a really good cpu!


At 4.5ghz underwater and without flipping the lid my temps don't go over 63c and thats at a voltage of 1.27 which drops to 1.24v ish. Baring in mind i have a graphics card in the same loop aswel which is overclocked to my signature specs.
 
Jay85 said:
Right just to clear things up here:


1) I have PLL overvoltage disabled

2) Spread sprectrum is also disabled but did nothing to my overall overclock... so i still went for bumping the BCLK up to correct my overall overclock which from what i'm seeing is the correct way for me anyway.

3) my board has no access to LLC and max voltage bump for vcore is +0.06v which is nothing really.. so i'm stuck on 4.5ghz till i can get a higher end board. Shame really because i think i have a really good cpu!


At 4.5ghz underwater and without flipping the lid my temps don't go over 63c and thats at a voltage of 1.27 which drops to 1.24v ish. Baring in mind i have a graphics card in the same loop aswel which is overclocked to my signature specs.
Click to expand...

What motherboard are you using?
 
Rossi~ said:
What motherboard are you using?
Click to expand...

I'm using a MSI Z77MA-G45 MicroAtx board. I know microatx boards would lack some features but i didn't know it would lack this much!

I should have gone for the Asrock Extreme matx board -_-
 
I'll take a look at the settings to see what's what to give further suggestions.
I will stress again though, vdroop is normal, it happens and isn't dangerous.
 
Jay85 said:
Thanks Rossi, appreciate it.

I know my board is limited but i was hoping for 4.6ghz :p
Click to expand...

Right, after checking out the BIOS screenshots i can see that you are limited and the voltage adjustment is so little, there' snot much you can do unless they release an updated BIOS to allow further vcore. Though it could be a design of the board, the power phase might not be able to take so much?

Either way, you seem to have experienced the same as this guy by hitting 4.5GHz and hitting the vcore wall. Only thing you can do is wait and hope for a new BIOS to allow you to push further im afraid dude. http://forums.hardwarezone.com.sg/hardware-clinic-2/[longsiew]-msi-z77ma-g45-3666044.html
 
Rossi~ said:
Right, after checking out the BIOS screenshots i can see that you are limited and the voltage adjustment is so little, there' snot much you can do unless they release an updated BIOS to allow further vcore. Though it could be a design of the board, the power phase might not be able to take so much?

Either way, you seem to have experienced the same as this guy by hitting 4.5GHz and hitting the vcore wall. Only thing you can do is wait and hope for a new BIOS to allow you to push further im afraid dude. http://forums.hardwarezone.com.sg/hardware-clinic-2/[longsiew]-msi-z77ma-g45-3666044.html
Click to expand...

Well that sucks, but again i'm kinda happy that i got a good value board and proving that for £90 you can get a decent overclock.

I haven't checked the bios updates yet but cpu-z tells me that 1.1 is the version of my board so i take it that that is the current version aswel.


Dilemna now is whether to DSR this board as i've had it for less than a week and get a better one or just stick with it... Could you see an extra £40-50 worth the extra mhz overclock?
 
The link gives me a good insight of his overclock settings and whether lucid mvp is worth getting aswel...

I'm put off by it because i've read not many applications utilise it or run well with it enabled.



Edit: When he talks about the jumper.. where the heck is the actually jumper bit that connects it??? I don't think mine ever came with one!!!
 
Jay85 said:
The link gives me a good insight of his overclock settings and whether lucid mvp is worth getting aswel...

I'm put off by it because i've read not many applications utilise it or run well with it enabled.



Edit: When he talks about the jumper.. where the heck is the actually jumper bit that connects it??? I don't think mine ever came with one!!!
Click to expand...

If you're looking for a jumper, just use anything to connect the two pins :) (and only the two pins).
 
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