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i7 3820 - 4820 Overclock Club - Page 123

post #1221 of 6491
Quote:
Originally Posted by kizwan View Post

My casing have negative pressure & it perform better this way. You should make sure your casing also have negative pressure. Currently I only have stock Corsair casing fans & H100 stock fans. I don't know their CFM rating. I'm assuming the three casing fans have the same CFM rating. The two fans at the front, works as intake, their highest speed is 1100 RPM, while the fan at the rear, works as exhaust, can go up to ~2200 RPM. Assuming CFM rating for all three are the same & combined with H100 stock fans, works as exhaust, there will be negative pressure inside the casing (exhaust: one at the rear & two at the top. intake: two at the front). The fans configuration provide direct airflow.
Both negative & positive pressure have pros & cons. The cons for negative pressure is dust gathered faster if you don't have dust filter.

I have the same setup in my 400R plus 2 side fans. I will see how this works out. Going to replace the corsair fans with some better ones in the next week or so.

Es
 
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post #1222 of 6491
Quote:
Originally Posted by Sporadic E View Post

Auto vcore? My experience with auto on vcore is it always puts more than is needed. Are you not finding this not to be the case? Are you using auto for your higher OCs as well? All this volt fighting is for not?
Es
No I was just stating that was pretty high. Never use auto :-)
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post #1223 of 6491
I'm completely content with this for now. smile.gif


Edited by Plex - 8/10/12 at 3:03am
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post #1224 of 6491
Very nice oc if it stays stable
post #1225 of 6491
For 4.625 I need 1.39+ Vcore haha, but at least it's stable now, 15 hours in P95 blend and no errors, it will have to do until after the Foldathon. tongue.gif
post #1226 of 6491
Quote:
Originally Posted by Paradigm84 View Post

For 4.625 I need 1.39+ Vcore haha, but at least it's stable now, 15 hours in P95 blend and no errors, it will have to do until after the Foldathon. tongue.gif

Nice. smile.gif

For what it's worth, I found P95 really doesn't do much for testing stability on this platform. I've tried a higher clock on this chip, and another 3820 as well, that both would run 12+ hours on P95 just fine, but then fail in the first 30 seconds of a Very High or Maximum IBT test. P95 has been getting worse and worse from a reliability standpoint over the past several years, we need to start moving off of it. frown.gif
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post #1227 of 6491
Quote:
Originally Posted by Plex View Post

Nice. smile.gif
For what it's worth, I found P95 really doesn't do much for testing stability on this platform. I've tried a higher clock on this chip, and another 3820 as well, that both would run 12+ hours on P95 just fine, but then fail in the first 30 seconds of a Very High or Maximum IBT test. P95 has been getting worse and worse from a reliability standpoint over the past several years, we need to start moving off of it. frown.gif

I was finding just the opposite as you. I would pass very high/max on IBT and fail 30 seconds into P95. The OC I am at now is both IBT and P95 12hr stable. I was having a hell of a time with P95 and no issues at all with IBT. Then agan my chip is a vcore hog unlike yours.

Es
 
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post #1228 of 6491
Quote:
Originally Posted by Sporadic E View Post

I was finding just the opposite as you. I would pass very high/max on IBT and fail 30 seconds into P95. The OC I am at now is both IBT and P95 12hr stable. I was having a hell of a time with P95 and no issues at all with IBT. Then agan my chip is a vcore hog unlike yours.
Es

Strange platform this time around. tongue.gif

Good to hear you're stable!
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post #1229 of 6491
Quote:
Originally Posted by Plex View Post

Nice. smile.gif
For what it's worth, I found P95 really doesn't do much for testing stability on this platform. I've tried a higher clock on this chip, and another 3820 as well, that both would run 12+ hours on P95 just fine, but then fail in the first 30 seconds of a Very High or Maximum IBT test. P95 has been getting worse and worse from a reliability standpoint over the past several years, we need to start moving off of it. frown.gif

I just tried IBT at Maximum and it failed after 5 passes.

I'm not sure what to do now, I don't really want to put the vcore over 1.4 considering it's not even a massive overclock, but lowering it to 4.5Ghz will be a let down.
post #1230 of 6491
Quote:
Originally Posted by Paradigm84 View Post

I just tried IBT at Maximum and it failed after 5 passes.
I'm not sure what to do now, I don't really want to put the vcore over 1.4 considering it's not even a massive overclock, but lowering it to 4.5Ghz will be a let down.

I know that Maximum is really hard to pass! Have you made any other changes in the BIOS to any other voltages? Are you running 125/125? I reeeeeally don't think you should need 1.4v for 125x37, even if it wasn't the best chip. frown.gif

We can figure this out! Are you sure you're BSOD'ing from vcore? Are you getting a 101?
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