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post #4151 of 9343
Quote:
Originally Posted by munaim1 View Post
Hey bud, I've had a few kinda bring this to my attention a couple weeks ago and not sure whether or not this issue can be fixed by a BIOS update. I personally don't have an issue as im using an intel ssd, same as you.

JJ also explained how C states can have an effect on the sata performance, mainly sata III:



This is obviously an issue for those with high overclocks. I have upto this point advised to disable C3 and C6 reports due to idle random bsods when using offset voltage, otherwise they're left on auto (default).

Bit of info from the stable thread:





I believe folmer's testing was with 4.6ghz, but not 100% sure but if it is then it kinda makes sense for all users that run sandforce based ssd's or sata III ssd's to disable C3 and C6 and that obviously means that they should use offset voltage and NOT manual.

what do you make of it?
This is very interesting. People with Sandforce SSD's should at least know about this. I will consider adding this information in the OP, or a link to your post.

Thanks for the information!

Edit: Added in the first post

Quote:
Here is some interesting information posted by munaim1 about C3/C6 states and their relation to SATA performance. Especially with Sandforce SSD's. I'll just link to his post. Link

Edited by turrican9 - 10/9/11 at 5:08am
    
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post #4152 of 9343
Quote:
Originally Posted by turrican9 View Post
nawon72

I'm currently using the 2001 bios. Seems no better VS the 1850 beta for overclocking. Needing roughly same amount of Vcore for my certain speeds.
Thanks for your input.

Are you ever going to update this:
Quote:
Originally Posted by turrican9 View Post
  • Try disabling C3/C6 states. This will hinder the CPU in ramping down the Vcore (as much?) when at idle/light load with Offset Vcore. (Will try this myself. Got a report it helped stability.)
You said you were going to try it yourself for a long, long time.
post #4153 of 9343
Quote:
Originally Posted by nawon72 View Post
Thanks for your input.

Are you ever going to update this:

You said you were going to try it yourself for a long, long time.
I just noticed that as I was updating OP.

I have ran with C3/C6 disabled for a long time now, and will update OP accordingly. Thanks for reminding me
    
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post #4154 of 9343
Now if only one of the mods could remove the poll from the thread...
post #4155 of 9343
Quote:
Originally Posted by nawon72 View Post
Now if only one of the mods could remove the poll from the thread...
I've asked several moderators, never got any feedback. So I don't know if it's possible.

Anyway, I think I did the right thing by including the P8Z68 series. They are almost identical to the P8P67 series, appart from those two new features of the Z68 chipset.

Updated OP now:

Quote:
  • Try disabling C3/C6 states. This will hinder the CPU in ramping down the Vcore (as much?) when at idle/light load with Offset Vcore. (Will try this myself. Got a report it helped stability.) Update! I have been using C3/C6 disabled for a long time now. Turns out these can cause idle BSOD's or freezing if they are at AUTO or ENABLED when overclocking. Me and others have confirmed it is best to leave these two Disabled when overclocking.

  • Use manual Vcore setting instead of Offset.

Edited by turrican9 - 10/9/11 at 7:03am
    
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post #4156 of 9343
Quote:
Originally Posted by turrican9 View Post
*snip*
I just remembered something you should add. Disabling both C3 and C6 will make the Turbo Ratio: By Per Core BIOS setting useless, because the clock speed in the OS will not change based on the number of cores used.
Edited by nawon72 - 10/9/11 at 8:39am
post #4157 of 9343
Quote:
Originally Posted by nawon72 View Post
I just remembered something you should add. Disabling both C3 and C6 will make the By Per Core BIOS setting useless, because the clock speed in the OS will not change based on the number of cores used.
Done
    
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post #4158 of 9343
Quote:
Originally Posted by turrican9 View Post
Done
I think this will make it a little more obvious what setting is being referred to:
Quote:
Beware though, that when disabling both C3 and C6 the Turbo Ratio: By Per Core function in bios will no longer work.

Edited by nawon72 - 10/9/11 at 9:13am
post #4159 of 9343
Meh looks like im gonna need some one on one with my overclock. 4.4 was easy 4.5 took a little work. Cant really boot 4.6 yet no matter what i do.

Im off tomorrow if anyone has a little time. 4.5 Daily is fine for me but id like to get 5ghz if possible even if its 1 coring it for the validation lol.
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post #4160 of 9343
Quote:
Originally Posted by nawon72 View Post
I think this will make it a little more obvious what setting is being referred to:
Fixed
    
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