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The Gigabyte Z87/Haswell Overclocking(OC) Guide - Page 236

post #2351 of 3248
My asus z77 did it, but i've not seen on z87
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post #2352 of 3248
Going to up CPU ring to 1.10V from stock value of 1.050V and keeping all other things same.
Is it possible to push more ring voltage(1.1 to 1.2 V) while reducing Vcore voltage same time a notch lower and get stable system ?

Edit - Update 1.

Ran IBT - High , screen froze.Restarted again and completed IBT high 20 loops twice.
Ran XTU - 5 mins passed , 30 mins testing froze screen at 28 min.
Conclusion ? CPU ring voltage of 1.10V is unstable for 4.3@1.195V but stable on all test with CPU ring 1.050V.rolleyes.gif

Update 2.
Passed XTU 30 mins.
Edited by Johny Boy - 1/14/14 at 5:59am
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post #2353 of 3248
Quote:
Is it possible to push more ring voltage(1.1 to 1.2 V) while reducing Vcore voltage same time a notch lower and get stable system ?

no
Quote:
Conclusion ? CPU ring voltage of 1.10V is unstable for 4.3@1.195V but stable on all test with CPU ring 1.050V.

After spending much time around haswell threads: I would bet money that your conclusion is wrong and you just were slightly unstable. Passing a test once does not mean that CPU is stable enough to always pass it
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post #2354 of 3248
Quote:
Originally Posted by Cyro999 View Post

After spending much time around haswell threads: I would bet money that your conclusion is wrong and you just were slightly unstable. Passing a test once does not mean that CPU is stable enough to always pass it
I don't know whether i was slightly or grossly unstable but almost all BSOD's with 124 bug code happend on BF4 while everything else ran smoothly for week on current setting.
By the way i did multiple times every test for every possible duration.
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post #2355 of 3248
Bf4 is a test itself, use it wink.gif
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post #2356 of 3248
nothing better than sloppy code to test stability thumb.gif
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post #2357 of 3248
Quote:
Originally Posted by marsey99 View Post

nothing better than sloppy code to test stability thumb.gif
In deed , only BF4 gives me BSOD lol.
Quote:
Originally Posted by Cyro999 View Post

Bf4 is a test itself, use it wink.gif
Upped my Vcore to 1.197V with Uncore Voltage-1.10V , No BSOD:p
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post #2358 of 3248
Not able to put 45x multiplier for 4.5G OC , can't set it by XTU or BIOS.mad.gif
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post #2359 of 3248
I followed the instructions from the initial post (great guide btw! lots of things explanied) and i cant seem to set the Vcore to drop.

I tried various methods. Setting the Vcore on "normal" sets insane 1.355V for core, but the Vcore drop works. I tries using the "offset" option below Vcore with no luck. I set it to +0.000 and when i boot i still get 1.355V for max voltage. If i lover it below 0.000V the computers slams randomly, even in BIOS.

So yes, i have followed the instructions from page 1. Set Turbo, C1E, C3, C6/C7 and EIST to auto, and multiplier does drop but Vcore does not.

So did anyone manage to get some nice OC and be able to adjust adaptive Vcore?

Cheers!
post #2360 of 3248
Quote:
I followed the instructions from the initial post (great guide btw! lots of things explanied) and i cant seem to set the Vcore to drop.

You must read Vcore from the correct sensor, this is labeled "Vcore" in hwinfo, you can also see it from >version 1.64.0< but not newer versions of cpu-z (though 1.64.0 still bugs sometimes)

You will want manual voltage setting. If you set 1.30v manual, it will target 1.32vcore at load, yet drop to ~0.7-0.8v or ~0.144v idle, depending on i believe c6/c7 state. It's very easy to get confused with the mess of bad vcore sensors though, only a few of them reference the right sensor and vcore number
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