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Haswell Overclocking Guide [With Statistics] - Page 314

post #3131 of 19603
Quote:
Originally Posted by Cyro999 View Post

Mine does not, but i've heard of more instability from a few different people with 4 dimms
Awhile back I heard 8GB was very helpful for BF3 MP and @ the time there were no 8GB modules, so I got 4 of the low voltage vengeance 4GB sticks to replace my 2x2GB's. But I couldn't get the system stable with an OC of 3.8Ghz on an i5 760/P55 rig. I tried some Mushkin sticks too and that also failed to give me stability. Then I read some favorable reviews of those super low profile Samsung UDIMMs. $40 for a 2x4GB kit. I plugged 4 of them in and booyah! Stability! No heatsinks, black PCB, low voltage, and shorter than the DIMM clips. Def one of my fav upgrades. Of course, nowadays 2x8GB sticks are easy to find...tho they go for $160. frown.gif
Quote:
Originally Posted by Ali Man View Post

Quote:
Originally Posted by ChrisB17 View Post

Just upped vcin and upped ram voltage.

Random Question
Is this the new revision of z87 or the old one?

It's the same revision, not sure that a new one even came out though. Rather just newer bios updates.

My Asus Maximus VI Hero has revision C2. All I know is that it supposebly alleviates the USB 3.0 bug...something about the controller losing contact with the device.
post #3132 of 19603
Quote:
Originally Posted by iatacs19 View Post


On my Asus Hero it's under CPU Power Management > CPU Integrated VR Power Management Efficiency. Options are: Auto, High Performance, Balanced.

I'll be damned if these could improve stabiliy and very curious how they relate to it. On gigabyte i exhausted every option to find a stable setting. There is a voltage barrier at which my chip is stable at, giving more will only make it more unstable, and iam not even hitting thermal barrier - max 90° in avx2. Maybe fivr efficiency has something to do with it?
post #3133 of 19603
Quote:
There is a voltage barrier at which my chip is stable at, giving more will only make it more unstable, and iam not even hitting thermal barrier

Hey, what are details of your OC?
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post #3134 of 19603
Quote:
Originally Posted by Cyro999 View Post

Hey, what are details of your OC?



Benchable stable vcore is 1.19
Stressable stable is 1.12
Above 1.3v nothing is bootable
post #3135 of 19603
Quote:
Originally Posted by t0tum View Post

I'll be damned if these could improve stabiliy and very curious how they relate to it. On gigabyte i exhausted every option to find a stable setting. There is a voltage barrier at which my chip is stable at, giving more will only make it more unstable, and iam not even hitting thermal barrier - max 90° in avx2. Maybe fivr efficiency has something to do with it?

Hi T0tum... I have the same problem. My barrier is about 1.25V...beyond that I get increasing instability. Up to 1.35V I cant even boot into windows with the same frequency that was stable at a lower voltage. Not complaining though since I can hit 4.77 ghz stable with 8 hours of handbrake, 4 hours of XTU, 2 hours of AIDA64 FPU+CPU and 1 hour of just FPU.
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post #3136 of 19603
Quote:
Originally Posted by t0tum View Post



Benchable stable vcore is 1.19
Stressable stable is 1.12
Above 1.3v nothing is bootable

Put your uncore down to 34x. Don't even start on it if your core is unstable, especially not on borderline voltages. I know my CPU like the back of my hand and would still hesitate to set 42x @1.15 ring, if you're not really stable how do you have any idea what you can set there? You're obviously having issues, so stop trying to approach from three angles at once. Having three or more bad settings is a terrible way to overclock, fix one at a time.

Why so high VRIN for so little vcore? Setting it like that would give me terrible results. Also, you have VRIN LLC at max or near max level?

Try 1.2vcore, 1.7vrin with max vrin LLC. 34x uncore and 1.15 ring. See what core multiplier you can pass x264 benchmark 5.0.1 with.

Fix core first, with a level of VRIN that gives kind of best results. Narrow things down til you're stable, then play around with VRIN a bit to try and shave a little bit more vcore off. Too low is terrible, but too high VRIN is very very bad too. After that and when you're sure of stability (with haswell this usually means days of regular use after various stressing) then work on uncore
Edited by Cyro999 - 9/26/13 at 11:30am
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post #3137 of 19603
Quote:
Originally Posted by Cyro999 View Post

Put your uncore down to 34x. Don't even start on it if your core is unstable, especially not on borderline voltages. I know my CPU like the back of my hand and would still hesitate to set 42x @1.15 ring, if you're not really stable how do you have any idea what you can set there? You're obviously having issues, so stop trying to approach from three angles at once. Having three or more bad settings is a terrible way to overclock, fix one at a time.

Why so high VRIN for so little vcore? Setting it like that would give me terrible results. Also, you have VRIN LLC at max or near max level?

Try 1.2vcore, 1.7vrin with max vrin LLC. 34x uncore and 1.15 ring. See what core multiplier you can pass x264 benchmark 5.0.1 with.

Fix core first, with a level of VRIN that gives kind of best results. Narrow things down til you're stable, then play around with VRIN a bit to try and shave a little bit more vcore off. Too low is terrible, but too high VRIN is very very bad too. After that and when you're sure of stability (with haswell this usually means days of regular use after various stressing) then work on uncore
Been there, done that. If you've taken anything from this thread haswell is like a female genitile - not one is alike.

And you do realize you are comparing your chip to this:
Quote:
Originally Posted by t0tum View Post

Have you tried lowering vcore? There are low vcore clockers out there. I cant get mine 4.5 stable at 1.2-1.25, but i can @ 1.113v.
My chip, posted on another board: http://valid.canardpc.com/2882992

and this:



My stock vcore was something above 0.95v
I still pull 160w from the wall @ 4.4 running with 1.12v, which most chips do at 1.3v. Voltage scaling of my chip is totally off and this is why i need that much VRIN for this weird vcore.
Considering most stability standards of this thread iam stable 4.5@1.113. I just cant pass prime 2.81, therefore i bumped vcore and lowered the clock.
post #3138 of 19603
FINALLY. FINAAAAALLY.

Ive been trying sooo hard to get 4,6ghz. Didnt really want to push over 1.3 vcore or 1.9 VCC but a mans gotta do what a mans gotta do...



You guys have no idea how hard Ive been trying to get 10 pts in cinebench 11.5.

Got the memory to 2000mhz at cl9 1t and cache to 4.3ghz at right about 1.1v ring.


Does any of the voltages seem high? Im good with temps under 90c under a 10 min prime run, Ill never get that high in everyday usage anyways.


FINALLY.
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post #3139 of 19603
Quote:
Originally Posted by t0tum View Post

Been there, done that. If you've taken anything from this thread haswell is like a female genitile - not one is alike.

And you do realize you are comparing your chip to this:
and this:



My stock vcore was something above 0.95v
I still pull 160w from the wall @ 4.4 running with 1.12v, which most chips do at 1.3v. Voltage scaling of my chip is totally off and this is why i need that much VRIN for this weird vcore.
Considering most stability standards of this thread iam stable 4.5@1.113. I just cant pass prime 2.81, therefore i bumped vcore and lowered the clock.

Interesting and must say for me I get stable overclocks @ 4.5 ghz with a manual vcore between 1.250 and 1.265. I am still testing for the sweet spot. If I use adaptive Of course with the same turbo vcore its sporadic. I get very high temps with synthetic tests such as aida, intel extreme testing etc which is a known issue. If I use .x264 I will crash with adaptive and pass at a lower voltage with manual vcore of 1.245 for 4.4ghz & 1.250 - 1.260 for 4.5ghz. I get about 6-10c less with hyper-threading off and no cpu scaling in aida with a manual vcore. With adaptive I get massive thermal scaling at first it was 13% and I reduced it to 5% with adaptive. Yes I know adaptive is for more real world benching. My uncore is @ 35 like the template suggests.

Coming from Sandybridge a few days ago I got away's to go before I get the ultimate mark and find my boundaries with my Intel I7 4770k. This is a whole new way of overclocking for me. Next I will test Vcore offset mode before doing any other changes. if I hit a wall I will play with the other settings listed in the OP. I have my memory which is XMP 1600 Kingston genesis Patriots @ 1.5v and 1333mhz for testing.

I am not sold on the adaptive mode yet and need to research how much it plays into other voltages going to the cpu. Anyways cheers.


Edited by trancefreak64 - 9/26/13 at 2:49pm
post #3140 of 19603
Got the msi mpower board in and all installed. Trying to stabilize 4.8 ghz right now but I am a total noob. Needing 1.36 on vcore at the moment.
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