Originally Posted by bullydog
Sorry to revive this week old thread. I came across you thread while googling about the same problems i experienced.
Ever since I got my Asrock Z68 mobo 2 weeks back I've been experiencing endless BSOD either during idle, internet surfing or watching a simple movie via VLC player, 25-30 runs on LinX and Prime95 no BSOD. As a seasoned X58 user i naturally disabled all the C-States settings when i first got in SB overclocking. While it transpires over the last 2 weeks i learnt that the more power savings feature I disable the more negative it turns out. By using Auto on most of the settings i noticed more stability.
I've made another interesting discovery with Asrock boards, I've been using LLC level 1 which is the most aggressive, I'm currently on level 3 LLC which seems to be slightly better, so far *fingers cross* no BSOD yet.
I'm not too sure if you have resolved your BSOD issues?
I was actually just gonna post - yes I have resolved it by doing the things I talked about in this thread. Rock solid since, I just wanted to wait a bit to be more confident it was working. I'm now at 4.8ghz which I haven't even fully tested for stability, but still no random bsods.
I felt kinda stupid posting this a week later when I realized that actually a lot of people have already realized/learned this. I'm sorry you're having problems though, god is it frustrating, you're happily browsing or watching a simple video, and BAM shutdown.
Anyway - to your post:
For me, LLC settings of higher numbers are more
aggressive (depending on how you define that term), unless for some weird reason they reversed it for the Z68 board. Higher numbers correspond to larger voltage fluctuations and less vdroop error at steady state which I call more aggressive. Lower LLC numbers correspond to a more gentle response and less voltage fluctuations but a bit more error steady state.
By more aggressive, what did you mean?
Are you used FIXED voltage? Because if you are, maybe try using Offset, get your load vcore where it needs to be and try LLC set to 3. I find LLC 3 and 4 are pretty good to use, seems to be the case for a lot of others as well. When you lower LLC, vdroop gets bigger so you then have to raise your Vcore in BIOS (to get the same stable load voltage) which ends up raising your idle voltage. This is something I played with to help with idle BSODs.... that being said, I don't know if the super low LLC values work. Maybe for you the response was so slow that it just doesn't reach stable voltage in time to do the work you're asking it to do.
As munaim1 pointed out, you'll also want to enable C1E and EIST
. With Fixed voltage its recommended to leave C-states on Auto; with Offset disable them (C3/C6, P-state limit can be whatever really but I got it on C2 now).
As far as the rest of the settings I leave VCCSA (obvious) and VTT/VCCIO set to Auto. Some say increase VTT/VCCIO, I tried it and got no benefit or anything. I just leave it on Auto now because SB tends to behave if you use Auto.
So yeah, the big ones are C1E and EIST, and maybe at some point try Offset voltage.