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Haswell Overclocking Guide [With Statistics] - Page 821

post #8201 of 19539
Quote:
Originally Posted by Cyro999 View Post

Drop to like ~1.85 vrin (with llc) and only raise it if you have to; you shouldn't need anywhere near 2.0 for 1.24vcore

Have not messed with LLC. Is this something that is normally disabled and all I have to do is enable it?
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post #8202 of 19539
I had tried to lower it at 1.90Vrin at 1.24Vcore but I kept on getting WATCHDOG errors so I bumped it up to 1.95 then to 2.00. Only when I hit 2.00Vrin was when I get a stable for running XTU.

At 1.90Vcore and 1.24Vcore I am able to run x264 20times but I am unable to run XTU for an extended period of time and got WATCHDOG BSOD so I bumped up the Vrin to get XTU to run for an extended (6-8hrs) of time.
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post #8203 of 19539
Cheers Cyro. I will leave it at 4.8 as it is a good OC with Haswell anyway. I ended up at 1.37 as 1.36 did have stability issues after all tongue.gif
I will still have to loop some Prime95, IBT and AIDA for a few hours each to make sure it is stable. And of course gaming smile.gif
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post #8204 of 19539
Quote:
Originally Posted by utee05 View Post

I had tried to lower it at 1.90Vrin at 1.24Vcore but I kept on getting WATCHDOG errors so I bumped it up to 1.95 then to 2.00. Only when I hit 2.00Vrin was when I get a stable for running XTU.

At 1.90Vcore and 1.24Vcore I am able to run x264 20times but I am unable to run XTU for an extended period of time and got WATCHDOG BSOD so I bumped up the Vrin to get XTU to run for an extended (6-8hrs) of time.

Hm sounds pretty crazy. You have LLC at near-max setting yes?

If not, it might be drooping from like 1.9 to 1.75-1.8 and failing then, but most people seem fine with far less vrin than 2.0 at 1.24vcore


For other guy, yea you need to manually enable LLC - it might be auto on at some mid setting
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post #8205 of 19539
Is there a MAX for vrin? I've ran 2.3 before and literally had zero change of stability...
post #8206 of 19539
Quote:
Originally Posted by bond32 View Post

Is there a MAX for vrin? I've ran 2.3 before and literally had zero change of stability...

Because it only helps to increase it if you're getting ~101 bluescreens from using too little? Or at least, to my current understanding

Max, not really. 1.9 if you're being super safe. 2.4 if you have balls of steel and feel like hanging them over a ceiling fan
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post #8207 of 19539
Quote:
Originally Posted by Cyro999 View Post

Hm sounds pretty crazy. You have LLC at near-max setting yes?

If not, it might be drooping from like 1.9 to 1.75-1.8 and failing then, but most people seem fine with far less vrin than 2.0 at 1.24vcore


For other guy, yea you need to manually enable LLC - it might be auto on at some mid setting

I have not touched LLC at all. I have only messed with Vcore, Vrin, and multiplier.
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post #8208 of 19539
well, you need vrin on llc (1.25v on i7 is like ~1.34v on i5 in terms of power draw) so when you apply high level of llc, you can probably lower it as it'll be more stable and not dropping further, then you should be fine with less like 1.85 or 1.9 afaik
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post #8209 of 19539
Quote:
Originally Posted by Cyro999 View Post

Because it only helps to increase it if you're getting ~101 bluescreens from using too little? Or at least, to my current understanding

Max, not really. 1.9 if you're being super safe. 2.4 if you have balls of steel and feel like hanging them over a ceiling fan

Even with 2.3 I got 101's, so not sure if I agree with you there... This was with 1.5 vcore
post #8210 of 19539
Well, RIP CPU - aside from that, are you testing with RAM @ ~1066mhz?

Only other thing i saw throw 101's was IMC, which behaved a bit weirdly sometimes when i was pushing CPU hard. I had a while where i had to use funky settings or 1066mhz RAM was stable but 2400 and even 1600 was unstable and i got 101's with them

You might want to lower vcore if you're not getting 124's, there's little testing for what VRIN you need at suicidal vcore levels but if you throw too much vcore, you'll need even more vrin to compensate for it
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