Trying to OC with dynamic Vcore problem.

A few Words about Offset Vcore.

Me and others have seen that when using Offset instead of manually typing in the Vcore, you get a more stable Vcore - Vcore will fluctuate less VS manual Vcore. This again can contribute to a somewhat lower Vcore needed for a certain clock frequency VS manual Vcore setting.

When you put volt values in the Offset field, you add the Vcore you type in there, to the VID of your CPU. However, the VID will vary between each different CPU, and also the speed you run it at.

My 2500K has 1.2410v VID when at 3.3GHz stock. This VID changes to 1.3410 when I overclock it to 4.5GHz. When I type in + 0.020 Volts for Offset, it will then give me 1.3410v + 0.020v = 1.3610v under load. This was tested with LLC at Ultra high. My real Live Prime 95 Blend Vcore varied between 1.360v - 1.376v. And for the most part was about ~1.368v.

If you are stable at full load, like Prime95 while using Offset, but get BSOD's when Idle/light load it is probably because the CPU Vcore ramps down on different load.

This usually happens at higher overclocks when using Offset. For me it works perfectly to use Offset at 4.5GHz with no BSOD's. But if you get problems on higher overclocks, you can try one of two things:

• 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.
  
  Beware though, that when disabling both C3 and C6 the Turbo Ratio: By Per Core function in bios will no longer work.
  
  Also another update, which have been posted in the first post of this Club for a while now, there have been reports when disabling C3/C6 stats can infact loose harddrive/SSD peformance. Especially SATA3 SSD's and Sandforce based SSD's. I have not experienced any performance loss with my Intel X-25 Gen.1 and Gen.2 SSD's when disabling C3/C6 stats.
  
  Here is a quote from the post I made earlier:
  
  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
• Instead use High LLC. This way you can have C3/C6 at Auto because High LLC will give you a higher Idle Vcore. Just compensate by using a Higher Offset Value to get about the same Load Vcore VS Ultra High LLC. This is probably the best solution.
   
• Use manual Vcore setting instead of Offset.