Increased VCore (Offset) vs Turbo Boost Voltage

[TheoneandonlyMrK]

My motherboard pretty much treats "additional turbo voltage" (as the setting states) like an offset voltage. .

Holy shit I think we're getting somewhere, now hit the turbo button.

Thats trolling mate.
My comments before were honest and informed as you now see.

 

[Shambles1980]

Whats in a name? what we call a rose, by any other name would smell as sweet

 

[PersonWithTech]

Holy shit I think we're getting somewhere, now hit the turbo button.

Thats trolling mate.
My comments before were honest and informed as you now see.

So pretty much "additional voltage turbo" isn't LLC. There is a different option for that. I'm on level 3 of LLC.
Read the guide I linked and you will get an idea of what I'm looking at

 

[Ed_1]

So pretty much "additional voltage turbo" isn't LLC. There is a different option for that. I'm on level 3 of LLC.
Read the guide I linked and you will get an idea of what I'm looking at

right, LLC is something entirely different, its load line calibration , think of it like in your car alternator's voltage regulator , it tries to keep battery at somewhere between 13v and 14v . When you put a heavy load on (say headlights ) the voltage drops for split sec then raises by the voltage regulator , its trying to match the current needed an little more. Well there no way for it to know ahead of time so there a drop in voltage when load gets placed.
With LLC its doing same thing but when you raise LLC its trying to compensate more, giving more voltage when the load is on but there always a small delay and there will be more spikes to, you never see this w/o a fast scope on voltage rail, no software can see it good .

So your MB supports multiple types of voltage offsets it seems, , there all still offset , compare to a manual static voltage (more chance of ups and downs with offset types)

 

[Aquinus]

CPUs have their voltages mapped to different power states (clock speeds) via the VID. Using additional turbo voltage is essentially like having another VID level above the highest one on the CPU when the turbo clocks kick in. It's basically an offset based on the highest VID voltage. Adjusting the core voltage as an offset will adjust all VID voltages by the offset you specify. So if you have an offset of +0.100v and your lowest idle voltage is 0.9v and highest load voltage is 1.2v, you would see 1.0v and 1.3v respectively. If you're overclocking with just the turbo, I would move the core offset to the lowest stable voltage you can get away with, plus a little more for comfort, then adjust the turbo offset for your turbo clocks. That way you maintain low power for all the regular VID levels but you still have extra voltage when boost is active.

You can overclock just by adjusting the core voltage offset, but you'll probably consume more power in general where using boost voltage offset will let you increase power when you need it. A combination of the two would probably yield the best results.

 

[PersonWithTech]

right, LLC is something entirely different, its load line calibration , think of it like in your car alternator's voltage regulator , it tries to keep battery at somewhere between 13v and 14v . When you put a heavy load on (say headlights ) the voltage drops for split sec then raises by the voltage regulator , its trying to match the current needed an little more. Well there no way for it to know ahead of time so there a drop in voltage when load gets placed.
With LLC its doing same thing but when you raise LLC its trying to compensate more, giving more voltage when the load is on but there always a small delay and there will be more spikes to, you never see this w/o a fast scope on voltage rail, no software can see it good .

So your MB supports multiple types of voltage offsets it seems, , there all still offset , compare to a manual static voltage (more chance of ups and downs with offset types)

Thanks. I believe I understand LLC. It is a protection mechanism from transients?

CPUs have their voltages mapped to different power states (clock speeds) via the VID. Using additional turbo voltage is essentially like having another VID level above the highest one on the CPU when the turbo clocks kick in. It's basically an offset based on the highest VID voltage. Adjusting the core voltage as an offset will adjust all VID voltages by the offset you specify. So if you have an offset of +0.100v and your lowest idle voltage is 0.9v and highest load voltage is 1.2v, you would see 1.0v and 1.3v respectively. If you're overclocking with just the turbo, I would move the core offset to the lowest stable voltage you can get away with, plus a little more for comfort, then adjust the turbo offset for your turbo clocks. That way you maintain low power for all the regular VID levels but you still have extra voltage when boost is active.

You can overclock just by adjusting the core voltage offset, but you'll probably consume more power in general where using boost voltage offset will let you increase power when you need it. A combination of the two would probably yield the best results.

Thank you, that was very useful.

 

[Ed_1]

Thanks. I believe I understand LLC. It is a protection mechanism from transients?


Thank you, that was very useful.

kind of , maybe this may help , 2 reference links and link of a forum about load line calibration .
http://en.wikipedia.org/wiki/Load_line_(electronics)

http://en.wikipedia.org/wiki/Voltage_droop

read those first for back ground .

http://linustechtips.com/main/topic/24019-load-line-calibration-why-overclockers-should-care/

there maybe be better links, but this is what I found fast and agree with most .

 

[Vario]

For daily usage, vdroop is in place for a reason, no point in circumventing it with LLC, especially if it only gets you 100 mhz more.

 

[INSTG8R]

Like you when I left my board on Auto and OC'd it put it at some crazy 1.4+ volts. This is where I used a negative Offset to brings the volts back down to a more reasonable level. I of course have my LLC increased and my VRM Frequency locked. ASUS had a great guide for OC'ing Sandybridge but for some reason they took it down.

 

[Ed_1]

Like you when I left my board on Auto and OC'd it put it at some crazy 1.4+ volts. This is where I used a negative Offset to brings the volts back down to a more reasonable level. I of course have my LLC increased and my VRM Frequency locked. ASUS had a great guide for OC'ing Sandybridge but for some reason they took it down.

I think the reason you saw such high voltage is because you raise LLC way up , many guides recommend high and ultra high setting so with a semi low OC you may need - offset but you probably could get away with less LLC .

 

[Aquinus]

Like you when I left my board on Auto and OC'd it put it at some crazy 1.4+ volts. This is where I used a negative Offset to brings the volts back down to a more reasonable level. I of course have my LLC increased and my VRM Frequency locked. ASUS had a great guide for OC'ing Sandybridge but for some reason they took it down.

Ohhh, yeah. VRM frequency will also let you reduce transience at the cost of a higher thermal for your VRMs, also I think it's harder for your VRMs to produce any given current at higher frequencies, so take your board and what it's capable of before changing it willy nilly. This is where having more power phases and VRMs capable of higher frequencies being really helpful.

 

[INSTG8R]

I think the reason you saw such high voltage is because you raise LLC way up , many guides recommend high and ultra high setting so with a semi low OC you may need _ offset but you probably could get away with less LLC .

No this was before even adjusting the LLC. The funniest thing is to get it back down to the 1.35V I run at I only used -0.005 to get there. This has been running like this 24/7 for at least 2yrs without issue.

 

[Ed_1]

No this was before even adjusting the LLC. The funniest thing is to get it back down to the 1.35V I run at I only used -0.005 to get there. This has been running like this 24/7 for at least 2yrs without issue.

were you using 46x like in your sig ?
Maybe your VID is very high ?
I have had good results using auto on my P8Z77V pro , this is on mild OC with low voltage 1.112@4.2 raising multpier doesn't raise voltage my VID is like 1.19@4200

 

[INSTG8R]

were you using 46x like in your sig ?
Maybe your VID is very high ?
I have had good results using auto on my P8Z77V pro , this is on mild OC with low voltage 1.112@4.2 raising multpier doesn't raise voltage my VID is like 1.19@4200

Yep haven't touched it since I set it up way back when. TBH I went as lazy as possible with it. Auto'd it up to x46, Negative Offset to bring the voltage back down, turned up the LLC(High), Locked the VRM at 350 and made sure my VRM Phases were at Optimzed. The only actual "voltage" I ever touched was the Offset.(-0.010)

Edit: I actually went and had a look so corrected some stuff.