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2500k Overclocking.... Offset voltage and VID questions

post #1 of 17
Thread Starter 
Ok so im playing around w/ overclocking my 2500k and im basically just trying to fully understand offset and how to dial in the voltages so that im not overvolting.

Now w/ a 42 multi and a +005 offset I get

Core Temp Load VID of 1.3911
CPUz Load voltage of 1.272-1.280

W/ same settings and -.010 offset i get
Core temp Load VID of 1.3861
CPUz Load voltage 1.264-1.272

I havent tested this very long w/ P95 so its not stable or anything, i was mainly running P95 for a few minutes to see where the voltages were at.

Whats confusing me is the VID being so high, the load voltage is looking very safe but seeing almost 1.4v in the VID is a little scary. I can see how setting a negative offset brings down my full load voltages but the difference between that and the full load VID seems like a lot.

Can someone explain this to me better? Does this seem normal?

My settings are

CPU ratio 42
Internal PLL disabled
Intel Speed step Enabled
Short duration 250
Long duration 250
Long duration (sec.) 1
Additional turbo voltage Auto
Core Current limit 200
BLCK 100.00
Spread Spectrum disabled
Power savings disabled
Dram voltage 1.499 (9-9-9-24)
LLC Level 3 ( 5 is lowest & 1 is highest)
All other voltages on auto
C1e Enabled
C3 disabled
C6 Disabled
C state support Auto
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post #2 of 17
when exactly do you see 1.4v in the VID and for how long ?
    
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post #3 of 17
I had some similar questions today.

This thread may help you wink.gif

http://www.overclock.net/t/1233219/changing-from-manual-to-offset-voltage

^^Sorry didn't realise an expert, coolhandluke41, was already on the case, reading your guide now thumb.gif
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post #4 of 17
Thread Starter 
Well i ran p95 for about 10min on +.005 offset and VID goes from 1.376 idle to 1.3911 full load and stayed steady for that amount of time. I didnt run P95 that long i was just trying to get an idea of where i was at voltage wise.
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post #5 of 17
My VID is high too. I have to apply a negative .045 offset for my 4.5 GHz overclock. I think it is normal but I don't know why they are so high.
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post #6 of 17
Thread Starter 
Ok i just dont want to be blind doing this and overvolt my system. Just seems like a huge gap between the voltages and when its explained in the quote below i understand it but they are a lot closer together then mine. Even though im just testing and not stable i still though they would be a little closer.
Quote:
Originally Posted by munaim1 View Post

Here's my quick little sandy guide:
Offset
Once you have 'found' your desired overclock, assuming you have followed the guide above, you should be using manual voltage and the correct level of LLC to determine and eliminate the vdroop as much as possible, then all you do is the following:

Once you know what vcore you require under load, using cpu-z you can work out the offset by using the VID. When running your cpu under load to read vcore, you can do the same to read the VID. That can be achieved by running prime with cpu-z and realtemp. The difference between the load voltage in cpu-z and the VID you see in realtemp is the offset amount you're looking for.

For example if your VID is 1.3875 under load and your cpu-z vcore under load is 1.4275, the offset will be a positive amount from the VID, so it'll be +0.040 (1.3875 + 0.040 = 1.4275)

If the VID is 1.3875 and your cpu-z vcore is lower, say 1.3675, the offset will be a negative value of from the VID, which is -0.020 (1.3875 - 0.020 = 1.3675)

Edited by Lucky 23 - 3/23/12 at 8:45pm
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post #7 of 17
It's the load line calibration..lower it a notch or two..if you want lower voltage.TBH..for 4.3...I think i use -.90
Set cpu-over-whatever to 110 percent
additional turbo voltage i set to .012<<this also may be where the voltage is coming from..maybe not if you have"internal pll overvoltage" off
I would leave that on....
Chip should do 4.2 with 1.2v or less
Here..read this guide:
http://hardforum.com/showthread.php?t=1578110
Edited by Schmuckley - 3/23/12 at 4:56pm
 
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post #8 of 17
Thread Starter 
Quote:
Originally Posted by Schmuckley View Post

It's the load line calibration..lower it a notch or two..if you want lower voltage.TBH..for 4.3...I think i use -.90
Set cpu-over-whatever to 110 percent
additional turbo voltage i set to .012<<this also may be where the voltage is coming from..maybe not if you have"internal pll overvoltage" off
I would leave that on....
Chip should do 4.2 with 1.2v or less
Here..read this guide:
http://hardforum.com/showthread.php?t=1578110

I have Additional turbo voltage on auto so maybe thats why the VID is so high. I also have internal PLL overvoltage disabled since most of the guides say that you only need it enabled for over 4.5ghz.
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post #9 of 17
so...any luck getting it where you want it?
 
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post #10 of 17
Thread Starter 
I went back in and set it to the same setting w/ the -.010 offset and switched turbo voltage from auto to the lowest setting +.004. When i got into windows the VID was still the same
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