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[OFFICIAL] ROG Maximus V Owners Club - Page 188

post #1871 of 4012
You WILL be able to find a lower stable voltage than 1.32v. Believe me. So far your temps are fine, no problem.

It would be nice to know your BIOS settings.

Okay, 20 minutes - 20 minutes of what?

If it's just 20 minustes of simple Internet use, then not having a BSOD during twenty minutes is not even the very least you should expect.... I'd be damned if I had BSODs after 20 minutes or even 12 hours of Internet and video games!

To get a stable OC you should run a Prime 95 standard test during at least 12 hours. At least. 15 / 16 hours is better, but 12 hours is considered stable.

But there are first steps to avoid waiting for 12 hours - do you know how to perform a 1344 and a 1792 custom test?
These tests are very simple to do. You run these tests during 15 / 20 minutes, and if it's stable, then it's a good sign and a first step before running a standard Prime95 test.
If you have a BSOD before 15 / 20minutes, then you will likely fail the Standard run.
Edited by DaGoat - 1/30/13 at 11:22am
post #1872 of 4012
I always did 12ish hours of Prime95 followed by some runs of IBT.

I've got my 2500k running at 4.8 GHz at 1.408v for about a hear now with no issues. I just had to re-test my OC after getting Windows 8 working right and all is well.

Is PLL Overvoltage disabled by default? I don't remember doing it manually.
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post #1873 of 4012
PLL Overvoltage should be enabled for extra stability when going over 4.7ghz.

As for stability I'd reccomend you guys to try running a Cinebench r11.5 test and monitor whea errors afterwards. It has yet to fail me, and when it does you can quickly pinpoint the issue running ibt max memory and prime 95 large ffts.

And andmygun, your chip could need 1.32v for 4.5ghz, not all chips are equal. I needed 1.37v for 4.7ghz, some folks need that for 5ghz.
post #1874 of 4012
Quote:
Originally Posted by ANDMYGUN View Post

Somethings off..

1core - 67c

2core - 57c

3core - 73c

4core - 74c

Should those temps be closer together?

There will always be some difference as one or more cores are always suffering from ADD (OK they're actually doing tasks that simply cannot be killed because they're part of the OS operations, etc..) Not to mention that even if you're using a discrete GPU there is always a little more heat on the core closest to the iGPU (I think it's core 4 but not positive).

All that being said... you're suffering from the same thing as I am on my older 3570K... it's called a desperate need to delid. Unfortunately all the careful TIM placement in the world won't help you if Intel did a crappy job applying THEIRS underneath the IHS... which they most likely did since you're seeing those temps. Take a look at the results in the De-lidded Ivy Bridge Club thread and you can see that in most cases the pre-delidding temps are extremely varried (although yours is even worse than mine I see up to a 14C delta between cores fully loaded - which is only slightly better). In almost every case - once they delidded and fixed (replaced) the TIM between the actual die and the IHS... the deltas dropped to less than 4C and the overall temps dropped by as much as 20-30C for the entire assembly. It's scary, but it's definitely worth it if you're going for the best OC with a stable system.

I'm doing mine as soon as I get some of my work behind me so I can go through draining (again) my rig and delidding my CPU. redface.gif In the thread you can find links to all the tutorials you would need... but be aware that you'll definitely be risking a warranty going that route... as for whether or not that's worth it - only you can decide. However, don't expect that just replacing the TIM between your CPU and the H80 is going to make a ton of difference... I'm running a dual 360 UT60 custom loop and I'm still stuck at 4.7GHz because two of my cores hit 80C+ (despite the other two being closer to 65C). Granted those temps aren't horrible, but I've already found I need a huge voltage increase to hit 4.8GHz+ so at that point I'll have thermal issues galore until I delid that sucker.
post #1875 of 4012
Quote:
Originally Posted by ANDMYGUN View Post

Ahh I broke my PC! I'm kidding. haha, I'm going to wait until I get my TIM before I venture into overclocking again, as for why I was absent; a man's got video games to play biggrin.gif

200 hour curing time you say? Worth the wait I guess, I don't really know my way around these things.

Edit: I tried the settings for a last try effort but my pc crashed, I was looking for a blue screen code but there doesn't seem to be one for Windows 8, I'm going to just wait until I get some TIM. Thanks buddy.

also I'm pretty sure it's my TIM as I get 30-40c idle.
That 200 hours curing time is a joke. Mine has been on for well over that and there's NO temp difference.
EDIT: Although now you have me thinking i should check/replace mine.....biggrin.gif
Edited by ripsaw - 1/30/13 at 2:34pm
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post #1876 of 4012
well that's my maximum
post #1877 of 4012
Quote:
Originally Posted by Pieterbouw View Post

well that's my maximum

Looks like you could go further with more voltage - at 4.7 is where mine starts needing much more - took 1.42 to get to 4.8 and 1.47 to get above that... so I'm stuck at 4.7 until the delid. Or until I swap it for the one I have here at work which can do 4.5 @ 1.14 so I'm pretty sure it will do much better on water and on the MVE (it's on a cheaper MSI desktop Z77 board at the moment). It should be fine up to 1.5V on air/water - but it was too much bump in vcore for too little return so I just left it where you're at now. Still my temps were higher with better cooling, so I bet you still have some headroom. smile.gif

EDIT - actually I presume too much... you actually might have better cooling on yours than I do... since I don't know how your rig is actually configured.
Edited by DiGiCiDAL - 1/30/13 at 5:26pm
post #1878 of 4012
Whoops! Wrong thread tongue.gif
post #1879 of 4012
Thread Starter 
Too many mutli posts to reply to each one individually but thank you all, I ran prime95 at 4.5ghz @1.32V for an hour before I fell asleep temps never went above 76c, that's when I found out my PC has auto sleep.... I'll be running it again as I hope it's stable, as for de-liding, I wish I had the guts to do it but on the off chance I mess up a $250 investment (at the time I bought it..), there's no way I can do it, respect though.

Edit: I've tried to run it again but now I'm getting WHEA_UNCORRECTABLE_ERROR blue screen.. Done for me until I get some new thermal.
Edited by ANDMYGUN - 1/30/13 at 7:01pm
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post #1880 of 4012
Guys I hav ordered Maximus V formula mobo...
As for modding I need some colores extension sleeved cables. ..
Can u give me a list of cables used in thos mobo...eg24pin ; 8pinetc... u guys can get me rite:)
I hav a cosmos 2 cabby. .. smile.gif
Plz help... m little noob in cables. ..
As oif I get a list I can order it nw...
Im planning fr bitfenix sleeved cables. .. if any other cheaper plz suggest smile.gif
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