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Haswell Overclocking Guide [With Statistics] - Page 888

post #8871 of 19603
Quote:
At what point would a 34x multiplier be a bottleneck? 4.5?

Every benchmark that i've seen shows 46/33 significantly beating 45/45. The point is - put up uncore afterwards to what you can without adding a bunch of heat for no reason - and do it after you have core clock up, don't clock 2 things at the same time and don't sacrifice core clock for it. Running 45/45 instead of 47/40 is very silly - aside from maybe in niche applications that i have not yet seen benchmarked.
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post #8872 of 19603
Quote:
Originally Posted by Darkwizzie View Post

I want to stab my own eyeballs out. Facebook posts about Haswell being a crappy overclocker and a line of people that have no idea how to OC Haswell,  treating like Haswell is Sandy 2.0 when it comes to overclocking, dismissing everything I have to say thinking they know better.

If you have MSI Mpower Mobo please read this:

Please doublecheck to see if override voltage mode acts like it and not adaptive.
Reading stuff on facebook just seems like chan4 or reddit. biggrin.gif
  
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post #8873 of 19603
Quote:
Originally Posted by Darkwizzie View Post

It's good practice to not overclock two things when you're starting out, so I advise keeping uncore to stock until you've got the core all figured out. When you're all set and done with uncore back to OC'ed state and you crash, you immediately know it's uncore because you know core is stable.


Good luck.
If you're going to do Prime-or-Die and you want to push for next multiplier, yea, you're going to have to delid. Keep in mind though, I'm at 1.42v on air nondelidded. BTW, just in case, what is your eventual input voltage? It probably isn't going to be a significant factor for that low of a Vcore, but doesn't hurt to make sure it's not some off the wall value, just in case.





using x43 multiplier cache ratio x35 default ram 1333
1.280v manual else at auto

cinebench run only once


and currently stressing aida64


am i doing good? havent tried prime yet

edit: just crashed at 58min aida64 xD
Edited by zeroofmhx - 1/22/14 at 4:01am
post #8874 of 19603
Thread Starter 
Quote:
Originally Posted by paramazon View Post


So it would be little to no impact if lets say i started raising the uncore to about the 38x, 39x mark? well i put my ram to manual anyways and its only 1600mhz so idc about that.
At what point would a 34x multiplier be a bottleneck? 4.5?

I recommend reading the first page of the thread. The section that specifically addresses your question is the "1:1 Cache Ratio" and the "Ring Bus Benchmark" sections. Here's the short version answer: There is no such bottleneck. Bottleneck in my mind means the performance dips drastically and increasing the core multiplier does not increase performance at all in benchmarks because the uncore is so far behind. This never happens and I demosntrated this over and over. The performance decrease from uncore is approximately the same for every 100 mhz from what I would pick up. And that difference is very, very small. Going from 3.4 to 4.2 doesn't even make as much difference as changing the core from 4.5 to 4.6.

This is why I recommend setting uncore to stock when overclocking the core. Having too high an uncore gets in the way of your core overclock and clouds your results. If you crash you don't know if it's core or uncore being unstable, which adds to the confusion. So once core is all done and stable, feel free to overclock uncore.

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post #8875 of 19603
Quote:
Originally Posted by holyking View Post




Here my setting

To post a better screen shot. Hit print screen, open paint and click paste or Ctrl+V. Bios should have an option too (think it was like F6 or F12 in the gigabyte bios). smile.gif
post #8876 of 19603
When my overclocking is not stable I get generally 9c or sometimes 101 bsod codes on blue screen but after the system reboot and login to windows the popup always shows that was bbcode 124 worriedsmiley.gif
Can somebody explain me why I’m getting two different bsod codes.
post #8877 of 19603
Quote:
Originally Posted by KennethO View Post

To post a better screen shot. Hit print screen, open paint and click paste or Ctrl+V. Bios should have an option too (think it was like F6 or F12 in the gigabyte bios). smile.gif
Thanks. I just grab my phone because i dont know how to do bios. Haha
post #8878 of 19603
Quote:
Originally Posted by Cyro999 View Post

As part of OC process, when you have the core multi you want, you'd put RAM to full clocks, then also overclock the uncore. You can adress and fix instability as you go. Increasing uncore clock has very slight performance benefits, but they're very slim to almost none in most applications

I thought once multiplier and vcore are dialed in, that then uncore and uncore voltages should be overclocked with RAM set to 1600. Then once the uncore and uncore voltages are dialed in to adjust your RAM to XMP or whatever you can get.

Just to clarify you are saying overclock the uncore and uncore voltages with the RAM at XMP profile?
post #8879 of 19603
Quote:
Originally Posted by darkadi View Post

When my overclocking is not stable I get generally 9c or sometimes 101 bsod codes on blue screen but after the system reboot and login to windows the popup always shows that was bbcode 124 worriedsmiley.gif
Can somebody explain me why I’m getting two different bsod codes.

I don't think we know for sure, but generally they indicate more or less vcore, vccin, or cache voltage. I'd try increasing one, See if you get the same or different bsod, then move to the next voltage if necessary.
post #8880 of 19603
Darkadi, i'd throw vcore for that 1000%.

If uncore is fine, it should be only vcore throwing 124. It can also throw 9c sometimes - but 101 as well (three codes! ha, see why you oc one thing at a time)
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