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post #6811 of 10702
munaim and others: whats the average vcore for 5.0GHz ?
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post #6812 of 10702
Quote:
Originally Posted by selluminis View Post

A little off topic and not sure if this has been mentioned and maybe I am looking at something wrong, but your temps seem a little high at that voltage even for air cooling....

Yea... :-( ... I'm no where near getting the temps I was getting before now. I think I have to reseat the HS. Core 0 is 10C cooler than 1 and 2. Then 3 is 8C lower than 2 and 3. I think when I was cleaning the dust off of it I must have shifted it or something. Core 0 has only hit 72C at max high ATM.

On the bright side, I'm almost at 2 hours running blend tests. I ended up with 1.415 vcore... if I don't make it beyond 4-6 hours, should I up the vcore more?
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post #6813 of 10702
Quote:
Originally Posted by munaim1 View Post

I think I must've mentioned to you before that you should be setting the timings, voltage and frequency manually if XMP doesn't work.
Higher the LLC the more it compensates the voltage under load not idle, therefore the lower the LLC the more voltage you will need to compensate it under load, this in turn increase the idle voltage aswell. Either way, negative or positive, I think the less you use LLC the more voltage you will need and that affects both idle and load voltage. Offset works off the VID and I believe the VID changes according to the multiplier.

Thanks. But the thing is if you use negative offset with a less LLC you need to use more voltage to get the same Vcore at load so in turn you subtract more voltage from the idle voltage as well and would probably produce idle lock-ups, correct? I understand your point for using less LLC and higher voltage to compensate for POSITIVE OFFSET but what I observe is the opposite for negative offset. Does my explanation make sense?

Also, what would be the disadvantage if you enable PLL Overvoltage for high overclocks (48x above)? I ask this because it is recommended to be disabled for low overclocks.
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post #6814 of 10702
There really isn't a disadvantage that I'm aware of. Just at higher clock 48x+ it just won't boot into windows.
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post #6815 of 10702
Quote:
Originally Posted by jam3s View Post

munaim and others: whats the average vcore for 5.0GHz ?

1.40v and under GOLDEN PRO RAPEFACE Z)GMOGOMG
1.45v and under GOOD/DECENT BUT NOTHING SPECIAL
1.50v and over .. TERRIBLE SELL ASAP FAIL CHIP LOL

thumb.gif
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post #6816 of 10702
Quote:
Originally Posted by selluminis View Post

WOW!!! Are you using off set or did you manually set the core voltage? I would love to get voltage that low and lose 100MHZ...

I have it set manually at 1.350v in bios
post #6817 of 10702
I'm not sure if this will interest anyone, but I was curious to see how my voltages compared. Here are tables for different OCs (based on GHz to nearest 100 MHz) for average voltages and also their percentile ranks. The value for n represents the number of data points (overclocks) for that particular frequency. Stdev is the standard deviation. Percentiles show the voltage for which X% of the observations occur above. So if your vcore for 4.7 GHz is 1.368, your vcore is lower than about 75% of other vcores at 4.8 GHz. The larger the sample size; the more reliable. There wasn't much data for some of them, so those aren't as reliable. Maybe this will help someone know where their chip stands (it makes my chip look fairly bad tongue.gif). Just realized I didn't account for 2500k/2600k/2700k, crap. Some of the data sets may be too small to try to include that though. Any feedback is appreciated.

700
Quote:
Originally Posted by dVeLoPe View Post

1.40v and under GOLDEN PRO RAPEFACE Z)GMOGOMG
1.45v and under GOOD/DECENT BUT NOTHING SPECIAL
1.50v and over .. TERRIBLE SELL ASAP FAIL CHIP LOL
thumb.gif

That's really close to the statistics biggrin.gif

As for my OC, I tried a 12 hour custom prime95 run last night, it BSOD'd (error 124) around 3-4 hours in. I tried 4.1 GHz @ 1.235 vcore (in bios), cpu-z reads 1.224 v. I was fine in custom 1344 and 1792 for 20 mins, as well as 20 pass max IBT, Should I try a little more vcore? My mobo (msi z68a-g45) doesn't have any of the other things to fix for error 124 (VTT/VCCIO or PLL, only Internal PLL overvoltage, which is currently set to auto (could enable or disable as other options)). Also, even with spread spectrum disabled, I still sit at 99.8 MHz bus speed. Is this ok, aside from giving me uglier speeds?
edit: When I went into my bios, some how the c-state options were turned off and one of my power limits was 200 instead of 250. I fixed those (enabled c-state, no limit)

Thanks
Edited by Molybdenum - 1/17/12 at 10:34pm
post #6818 of 10702
thanks molybdenum
your chart is very useful biggrin.gif
post #6819 of 10702
Hi guys,

Was hoping somebody could help me out with my OC. I've had my 4700 MHz OC submitted but having a hard time getting to 4800 MHz. In fact, I actually went back to 4700 and ran prime again under the exact same settings I was able to get 12 + hour prime stable on and failed at around 7-8 hours...which is very strange to me.

Anyways...I've been reading the forum and trying many different settings recommended and looked at some bios templates as well but closest i've got was 7 hours or and then i would get a failed worker "rounding error"

Would anybody be able to shed some light on what else I can do? or any users with similar hardware to me can share your settings with me?

My hardware:

P8Z68-PRO V / GEN3 / 2700K / CORSAIR VENGEANCE LP DDR3 1600 9-9-9-24

Here are my screens...these settings can get me about 6 -7 hours on prime blend until i get 1 failed worker

450
450450
450450450
Edited by jsymack - 1/17/12 at 11:43pm
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post #6820 of 10702
Disable C3 and C6 if you are running offset voltage. My money is on that being the reason it failed in the 7th hour. Never mind, that usually only causes idle BSOD issues. What is your voltage reading on CPUz under load?
Edited by TahoeDust - 1/17/12 at 11:58pm
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