Quick voltage Question

Doomedspeed

Doomedspeed

Doomedspeed

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Mr Pack,

Just playing around with my overclock on my 2500k @ 4.7..

In BIOS Vcore is set to 1.33 on LLC level 4 (silly gigabyte Load line system)

Under load the voltage is a reasonable 1.344

d14load4.jpg


However at idle CPU-Z is say the voltage is 1.380

d14idle4.jpg


I know that 1.38 is safe (just) and the reason this happens is down to VDroop.

I would really want to push it further though, Is there anyway to make my Idle voltage lower?

I have tried using offset voltage and can't get them to be as as stable.

Thanks Guys!
 
thats cos its not under any load at idle,so no vdroop and 1.38 instead of 1.344v

its not hard to get offset/dvid working,you need to set cpu v to normal and start off with small amounts of dvid +0.010 and so on each time looking to see where you are regarding cpu voltage in cpu-z,keep adding in dvid till you reach your stable voltage of 1.344v in cpu-z under stress load
 
Doomedspeed said:
So offset voltages is the best way to keep the idle voltage down?

Off the top of your head where'd you suggest (offset wise) i start off?
Click to expand...

yes ive always used offset/dvid since my x58 ud5,itll use less than 1v at idle,full speed/voltages at load

idk it depends on your cpu could try with +0.010v to start with,if it fails to boot keep adding in 5 increments or one click more so +0.010v +0.015v +0.020v and so on,keep going till you see 1.344v under load in cpu-z

turn on all power saving aswell,it wont affect your oc
 
Thanks for the Help Wazza but my play with offsets hasn't gone to well.. I get it to match 1.29-1.30 (what is suitable for 4.5 load) and it still crashes..

Thought of another way around it though..

I've been playing with the LLC settings, Decreasing the amount of Vdroop so i can set it near to the voltage i want to start with.

So, it was hitting 1.380v with a Load of 1.344v

Now i have it at 1.368v with a load of 1.356v.

Still a bit too much voltage for 4.7 but a good start, think im on a good path.

I did read that some gigabyte motherboards can have issues with offset voltages, which may require a BIOS update.. :)

EDIT: Actually discovered using Load Line 6, at idle has lower voltage than at high. Just need to set it lower in the BIOS.. :)
 
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You do tend to use slightly more CPU v with offset compared to a fixed voltage but it is possible,I'm running a 4.5ghz oc with offset on my z68 amd it works well,also at 4.8ghz using same method on my z77

It does take a while to get right but does work
 
Like 8 pack said id rather feel in control of my over lock, may give ir another go down the line though.

I think done what I wanted. Can you just check this makes sence?

in bios vcore 1.220
In bios LLC level 6.

Cpu-z idle 1.320
Cpu-z load 1.344-1.356

Does that look about right?
 
8 Pack said:
Looks fine to me if you mean Vcore in Bios 1.32v not 1.22v. If you set 1.22 and its giving 1.32v something is wrong.
Click to expand...

unfortunately that is the case, so something may be wrong.

It seems to be the load lines which are dictating it, as far as I can see.

At level 3, the load voltage was close to what I set In the bios, but the vdroop was a lot and my idle voltage was crazy high comparitively.

Any advice about LLC on gigabyte boards?
 
wazza300 said:
I think it shows before llc is applied in gigabyte boards,if 1.32v is needed in windows at 100% stress then its fine,if you only need 1.22v at load then you need to lower the llc level ect
Click to expand...

Cheers mate, i think i have it sorted now.

I dropped the LLC so that the load Voltage is only a step above the idle.. More stable that way (IMO).

So, at level 5; i enter 1.275 as vcore with LLC applied it's displayed as 1.320 (in the BIOS). In CPU-Z (idle) it's 1.332 at load it's 1.344

Time to push to 4.8.

Any objections? :)
 
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