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Haswell Overclocking Guide [With Statistics] - Page 233

post #2321 of 19539
at only 4.0 it shouldnt be needed to already mess around with the digital I/O & Analog
post #2322 of 19539
All this messing around, just to hit 4Ghz. Its ridiculously. It would be understandable if I were messing with the bus speed + uncore speed + multiplier all at the same time. But no. Its just the bloody multiplier.
I'm gonna give up now, and throttle down my CPU.

The max it can be pushed to if intel turbo boost were enabled, is 3.8GHz, right? So if I put it to 3.8GHz, I shouldnt have to touch any voltages at all?
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post #2323 of 19539
what speed is ur ram because ive played with about 4 4770k and I can pretty much say all of them would boot on auto/stock up to 4.4 - 4.5

like he stated above something seems off try upping vccsa+io voltage some and see...

and I play with 2600+ dnt listen to my sig rig lol not suing those anymore running 2933mhz gskill using +0.205v on the vccsa
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post #2324 of 19539
Great thread, thanks SO much for taking the time to do this, I am very much an amateur overclocker and a guide like this tells everything I need to ask questions about. I have a 4770k which I am just experimenting with ATM, I currently have it set to 4.6ghz (100x46) @1.31875v (in Prime95 it ups it to 1.344v which doesn't bother me... should it?), at this level it was hitting temps of 81-84, I did this before reading your guide and panicked at the temps and stopped it. I'm going to give it another go now but from the look of things so far I may have a good CPU! Thanks again for the great guide. thumb.gif
    
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post #2325 of 19539
Quote:
Originally Posted by Clexzor View Post

what speed is ur ram because ive played with about 4 4770k and I can pretty much say all of them would boot on auto/stock up to 4.4 - 4.5

like he stated above something seems off try upping vccsa+io voltage some and see...

and I play with 2600+ dnt listen to my sig rig lol not suing those anymore running 2933mhz gskill using +0.205v on the vccsa

1600Mhz memory.


if I set my i5-4670K to 3.8GHz. That is the Intels turbo boost max speed anyways. Would I be able to do that with vcore at auto? I just dont know how much "auto" scales up and down.
Edited by wendigo4700 - 9/10/13 at 7:32am
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post #2326 of 19539
hey Kingd0ng I see your using prime95 IMO starting off you should try and use intel tuning utility and use the cpu stress test this is designed by intel and updated as needed prime95 is more 3rd party and results will vary....yes intel cpu stress test seems to stress slightly less however its still more than or equal to any load you could possibly apply asise from encoding etc.

http://www.intel.com/content/www/us/en/motherboards/desktop-motherboards/desktop-boards-software-extreme-tuning-utility.html
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post #2327 of 19539
Hi there, thanks for the info, I'll give that a go too. Any thoughts/comments on the state of my oc results so far? I kinda know what I'm doing (not completely) so it's great to get an opinion from someone who does. Cheers mate.
    
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post #2328 of 19539
Major advantage of Prime95 CustomFFT: you may stress certain voltages.

864K/1344K for VCore
720K for VTT = analog / digital I/O
768K for VCCSA / System Agent
448K for Input Voltage / VCCIN / VRIN (different names for different mobo brands)
512K/576K for Cache/VRing Voltage
post #2329 of 19539
Those guys who seem to encounter phantom x124 (9XXXX) BSOD please note that increasing your vcore helps this, and also LLC isn't important on the Haswell so you will be fine off with a lower level.
Been noting down 2 sheet's of A4 papers for all the behviours i noted in haswell and blindly increasing voltages won't help, drop that LLC level and if you are experiencing troubles with bsod after changing RAM frequency change your I/O Analog and Digital to Auto and leave Agent to +0.005 / 0.007 depending on your frequency.

You can also increase the extra power to your ram to 110% instead of 100% this has seemed to help my stability.
Haven't crashed yet, i had one bsod during BF3 but after i increased my vcore by 1 it never happened again.
These are my current voltages, and no it's not a golden chip at all.

VCORE 1.351 V
VCCIN 1.860 V
LLC LEV 7
UNC 39 @ 1.150 V
HT 44
RAM 1600 @ 1.65 V / 110%

Hope this helps someone.
I can manage to boot to desktop with 4.8 and the exact same voltages but i'm guessing it will need a lot more to get stable.
post #2330 of 19539
When I set my CPU to 3.8Ghz just right now and vcore at auto, it BIOS loads up with 1.134 volt.

So if that is true, I guess I had too low volt for 4Ghz? Because at 4Ghz my last attepmt where I further raided the vcore, were 1.13 volt

So if the BIOS can be trusted, that could mean I might even need 1.18 volt for 4Ghz - / + ?
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