Originally Posted by munaim1
If you see C3, C6 should be there aswell lol. If they are set to enabled, change them to Auto, however if you use the sleep function then you need to disable C3 and C6. LEAVE C1E and SPEEDSTEP.
I have the same issue and I think the best first step is disabling C states. By doing that you prevent the cores from dropping in speed/voltage when your doing something light, like browsing the web.
Package C-state support essentially means the cores can only drop into a lower state if they're all ready to (otherwise they're held at higher state) - you don't want to shut off the clocks while one core is still working, in simple terms. I'm not sure if disabling package C-state support matters at all when all you have is C1E enabled.... I've had it off for awhile, just recently I set it to C2, doesn't seem to make a difference and really I wouldn't it expect it to when the lowest C-state I have enabled is C1E. C2 should be fine but what I DONT want it doing (if I were to set to Auto) is for some reason deciding C3/C6 is OK. When you pick the Disabled option for C3/C6 you are disabling it for the cores
, NOT the package
. I am not 100% sure what happens if you disable the core c-states but enable auto package c-state support...... I just want to be sure what's going on with my CPU so that if something goes wrong I can actually interpret the results.
After that the next thing you can do is lower LLC... this will decrease the voltage over/under spikes but at the penalty of having a larger Vdroop. Because of this Vdroop however, you will have to add a bigger offset voltage in BIOS to get the same load voltage (ie what CPU-Z says when running Prime) as before. This means you idle voltage goes up, but the load voltage does not... it has a similar outcome as disabling C-states... it reduces the voltage gap between V_idle and V_load, which should theoretically help with these types of bsod's. It has for me.
You can always add more Vcore, but these things will help you if you're already stable under load and don't really need the extra voltage there.
After disabling c-states on a not 100% stable system, I've had one idle bsod. Since then I upped my voltage 2 ticks instead of 1 and lowered LLC. I am thinking I will be good now... its been awhile since I've seen that dreadful royal blue minimum resolution screen.Edited by donkrx - 8/2/11 at 9:07pm