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post #5091 of 10702
Quote:
Originally Posted by crabby654 View Post
Oh I completely forgot I'm using offset mode as well with LLC ON with 0.040+. I can't recall any BSODs Ive gotten anytime recently tho. Honestly since I turned off C3 and C6 everything just "feels" much better for my setup, don't know why but its a weird snappier feeling with certain things.

For me personally I love the voltage fluctuation because it keeps everything nice and cool
Oh yeah, the fluctuation's great, I agree I don't want to be running the same load voltage at idle...by fluctuation with LLC though, I mean when stabilising to another state. The graph's here explain it better than I ever could - but I'm not sure if they're entirely accurate any more.

At this point, I'm just finetuning and slightly more worried about an idle B.S.O.D than one at load/while stress-testing. Once I find the sweet spot for PLL/VTT/VCore/etc, that's the next objective...eliminating an idle B.S.O.D.
    
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post #5092 of 10702
Thread Starter 
Quote:
Originally Posted by Instynx View Post
I think I'm ready to join the club. Got a 4.7 GHz OC going. Not sure why mine is saying the Bus Speed is not at an even 100.0, for some reason it's reading at 99.77..
Could you post your screenshot as an attachement please. Thanks.


Quote:
Originally Posted by kevindd992002 View Post
Well, I'm curious on how Vdrop and VDroop works as "protection" to the system that's why I was asking. If I set VCore to the max "safe" voltage that I want to, I don't want the system to go over that value in any instance (whether at idle or at load).

Any reason why in my observations, Ultra High produced higher voltages than Extreme? Also in your system, why did Ultra High produced lower idle voltages than High when it is supposed to do vice versa?

If I use Offset, we eliminate the phenomenon of VDroop, right? Because the idle voltage will drop totally to a lower value.

I thought Spread Spectrum should be disabled ONLY when changing the BCLK frequency from the default 100MHz?
You're confusing me know. This is what I know take it as you will.

Vdrop is the difference between the UEFI and CPU-Z at idle, Vdroop is the difference between UEFI and CPU-Z under load.

LLC is there to compensate the vdroop and get the voltage as close to the UEFI setting as much as possible without it spiking above. In some cases (don't know why) the idle voltage is slightly higher, to combat that I believe that you have to use a higher LLC but that inturn will increase the voltage under load causing voltage spikes. Having a higher idle voltage is actually fine and shouldn't be a problem but why use it when you can use offset voltage?

Once you have determined a LLC setting that works best under load forget about idle voltage then go onto using Offset mode. 75% LLC and 50% LLC works best in both manual and offset method. Try reading a bit more about what offset does and what LLC is there for.

From my own testing of llc when using offset is as follows:


Quote:
Originally Posted by munaim1 View Post
LLC Setting and it's impact on overclocking with the use of Offset voltage

You should enable C1E and Speedstep and see if that helps, as it doesn't effect overclocking or stability under load, so there is no reason to disable them. If you use offset votltage in combination with C1E and Speedstep it will allow the voltage to drop along with the multiplier when it's at idle, however some have found that using offset can cause idle random bsods because of the low votlage and how quickly it rises when it's under load. The simple solution to that would be to reduce the LLC setting a litle to maintain a higher idle votlage, but will require you to increase the vcore a little.


Here is an example of how LLC can affect idle voltage:



This is using High LLC (50%) and an offset of + 0.150:

Idle Voltage



Load Voltage (fluctuates between 1.472 and 1.480):




This is Ultra High LLC (75%) and an offset of + 0.110:


Idle Voltage


Load Voltage (fluctuates between 1.464/1.472/1.480/1.484):



As you can see the idle voltage when using a 'lesser' llc control allows us to increase the vcore so that the idle voltage is not 'too' low. When using ultra high llc, we use less voltage but get similar or the same load voltage but the idle voltage is much less. That could be what the problem was, im not sure. By the way, I have said this countless times, the bsod code list is not 100% accurate, 101 could be even qpi/vtt.

Hope that it helps you



As you can see in both instancesmy idle voltage is no where near 1.47 or higher that's why I'm not worrying. You're over thinking things that's not really important. If you don't find the answer you're looking for create a new thread for it.




Quote:
Originally Posted by sq_a380 View Post
This is interesting. After reducing LLC from Extreme to Very High on my 2500k, it won't stay stable at 1.31V @ 4.7GHz. The 4th core keeps giving me errors in Prime95 blend.

Raising it back to extreme put it back to normal.
Extreme LLC will cause voltages spikes underload, not sure how much but once I used it and it increased it above 1.5v.

If you want to use a lesser LLC setting then you would need to increase the vcore to to scompensate the load voltage to what is needed for stability.
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post #5093 of 10702
Hi munaim1,how are you getting on withe the new board,did you have to make any adjustments for your previous oc with the new board,or was it near enough the same bios settings,
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post #5094 of 10702
Quote:
Originally Posted by munaim1 View Post
You're confusing me know. This is what I know take it as you will.

Vdrop is the difference between the UEFI and CPU-Z at idle, Vdroop is the difference between UEFI and CPU-Z under load.
Gotcha. So technically the Vdrop and Vdroop holds true for Manual voltage only since the CPU-Z at idle is close to the UEFI setting and CPU-Z at load is close to the CPU-Z at idle. Using offset makes CPU-Z idle very far from UEFI and CPU-Z at load.
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post #5095 of 10702
Thread Starter 
Quote:
Originally Posted by moorhen2 View Post
Hi munaim1,how are you getting on withe the new board,did you have to make any adjustments for your previous oc with the new board,or was it near enough the same bios settings,
Have a bit of a problem at the moment, might need to replace my chip or the new mobo, either one or both could be dead or DOA. I'll let you know of any developments.


Quote:
Originally Posted by kevindd992002 View Post
Gotcha. So technically the Vdrop and Vdroop holds true for Manual voltage only since the CPU-Z at idle is close to the UEFI setting and CPU-Z at load is close to the CPU-Z at idle. Using offset makes CPU-Z idle very far from UEFI and CPU-Z at load.
What I said above.
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post #5096 of 10702
Can i run custom prime 95 for 6 hours with really high settings? What settings should i use?
post #5097 of 10702
A bit off topic, my usb drive wont show up in the UEFI Bios when I hit F12, googled for help, NOTHING. (Wondering about format of usb issue, etc)

I want to post screens of my bios settings for people rather better at OC'ing to help me get my volts down.

Rep for anyone that tells me how to get my usb working.
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post #5098 of 10702
formatted as FAT32?
post #5099 of 10702
Here's my submission. Only managed to get 4.6 stable after a whole bunch of reading here, so thanks for the help.

I was using offset voltage but was running into crashes on less than full loads with 75% LLC, even after 12 hours of Prime. I suspect my idle voltage was too low, so dropping to 50% LLC and upping the offset to compensate did the trick. Stable as a rock for over 19 hours. Haven't run into any more idle crashes either. Ultra high or extreme LLC does not play well with offset voltage in my experience.

Edit: Forgot to mention, I'm using a Silver Arrow.
Edit 2: My RAM: Patriot Viper Xtreme 8GB 2X4GB DDR3 1866MHZ PC3-15000 9-11-9-27 1.65V

Edited by SmilingPolitely - 10/30/11 at 7:14pm
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post #5100 of 10702
Quote:
Originally Posted by munaim1 View Post
Have a bit of a problem at the moment, might need to replace my chip or the new mobo, either one or both could be dead or DOA. I'll let you know of any developments.

I hope it's only something minor, not the chip or mobo.
Seems so unlikely that it would be the 2500K, as for the M4E, it happens.
I've been checking the Newegg site for sales on both versions of the M4E regularly, (possible xmas gift for myself) and I find the amount of doa and defective boards reported there a bit disturbing. But, I know that for every bad board reported, there are many more good ones, so hopefully yours will prove to be ok.
Edited by DerComissar - 10/30/11 at 6:29pm
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