System Instability after OC (4670k)

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BasicReference

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Dec 3, 2013
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I'll post specs first then get into specifics.

i5 4670k
Z87-GD65 MSi Mobo
16GB Ripjaws X Series 1600mhz
GTX 970 SC

I've been aiming for 4.6ghz, but right now I'm still trying to get 4.5ghz stable. I got the bluescreens on boot to stop, now the system can emulate Breath of The Wild using CEMU (uses like up to 94% CPU, 95% RAM to reach 30fps) for sometime, but eventually it crashes. I'd say after about 10-15ish minutes in. However, I was using the bathroom while it ran for a minute and when I came back I was at the windows log in screen. I don't think I BSOD, because normally it doesn't boot right back into windows, because my keyboard usually doesn't register before windows boots and therefore it almost always tries to start up repair if I can't get my keyboard to work to cancel it. Windows Event Viewer doesn't show any errors either, so this last crash doesn't seem like a BSOD. My actual OC is as follows:

45x Multiplier
38x Ring Ratio
1.280 Vcore
1.8 Input Voltage

I do have XMP. enabled and CPU mode is on fixed (all cores firing the same)

What are some suggestions I can do to improve stability? Everything else is on auto, could some of these be manually changed? Could it be XMP? I'm kind of a noob here to OCing. Thanks!
 
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BasicReference

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I'm definitely still getting BSoD after about 40 mins in x264 stress. I changed some more values:
45x Multiplier
38x Ring Ratio
1.282 Vcore
1.9 Input Voltage

I really don't know what else I should change to make it stable. It seems with each change it gets more and more stable, but at this rate I'm gonna hit 1.3vcore for a measily 4.5ghz (I know a lot of haswells are this way, but my cooler is only a Hyper 212 Evo+. I was getting around 75c under full load at 100% and crashed after 40 mins. Obviously changing more than one value at a time wouldn't be a very accurate test, so I'm wondering if I should keep changing input or vcore, or if there is something else I've left on auto (everything else is auto unless I posted a specific value) that needs changed, what would it be? I have not changed any ram values, and I disabled XMP.
 
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ohiou_grad_2006

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Dec 3, 2011
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Might have to try bumping voltage another step or 2. Also with that evo, if you have another 120mm fan, those usually come with brackets to mount a second fan so you can do a push pull setup. I had a cooler master v6gt, similar to the evo on my FX 6300 and overclocked over 4ghz it stayed nice and cool under there.
 
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BasicReference

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I've got an older case (Cooler Master Cosmos), I've got the 212 Evo pushing air into the exhaust fan which is sucking air out of the case. Is this essentially the same thing? Also one of my fans broke when I was cleaning them, but it barely spun anyway and I got 2 others which were also stopped from gunk to spin like new, so despite losing a fan (i'm ordering another) I'm still getting alright temps. I just don't want to go above like 80c on absolute max on max load. How much should I increase the input voltage by? Like is say, 0.010 enough? For example from 1.9 as it is now to like 1.910? (BTW actual value was like 1.88 when i had it set to 1.8, and that seemed what it was hitting in the bios under idle load so I expect whatever value I put to actually be higher)
 
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BasicReference

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I can for sure mount another fan there, but that's where my HDDs are so I doubt there'd be any airflow as the path is blocked by the drives themselves, but there are areas for mounting to the case. I have 4 case fans, one on the back, two on the top and one on the very bottom on the case (it sits on rails not on it's flat bottom). The one on the bottom is the one that broke, so all it was doing anyway was removing a little heat from the equation but since it sounded horrible and grinded when it spun I figured it probably wasn't working much anyway.

 
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BasicReference

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How exactly do I do that? This is the first I've ever heard of doing that, unless my UEFI calls that another name (MSi has some weird names for stuff (RingV instead of Uncore...etc)
 
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KirbysHammer

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Jun 21, 2016
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I have no clue why I just said that. It's utter bull. I just felt like saying something here! Sorry bud.
 
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BasicReference

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Haha, I had a feeling. :lol:
 
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BasicReference

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Still unable to pass x264 for longer than 20 mins at the following values:

45x Multiplier
Ring Multi 38x
1.285 Vcore (reporting as 1.296 actively in the bios)
2.0 Input voltage
1.200 Cache Ratio voltage (reporting as 1.23ish actively).

I'm a little lost. Should I only be upping v
vcore? Hopefully my Haswell is not such a sucker I need 1.3v for 4.5ghz...
 
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KirbysHammer

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Jun 21, 2016
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It's likely. Some chips just don't overclock well and yours is probably one of them.

 
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BasicReference

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Dec 3, 2013
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Some new info. I went to work and I left my computer on (I just had it restart after my last crash and let it boot up and left) I came back to windows login, and of course windows reported an error to me. Apparently I'm still bluescreening during idle usage after a few hours. Does this help any? Does this point to something I could do to fix anything? Just looking for general answers here now, I just want to get stable at 4.5 if I can. It's taken me the past couple of days trying to get it to work. Also, should I use XTU (Intel Xtreme Tuning Utility) for OCing vcore while it's running? Seems like it now starts on startup and applies my last settings I input into it despite what I have set for bios (which is what I use mainly for OC).

Another thing, is it possible this is a PSU issue? I only have a 550w I believe. Specs are posted above but I'll repost them here too so maybe someone knows the power draw from all of it and could tell me how close to max I am, and whether crossing that would cause stability issues like I'm having (I know it causes issues for sure but am wondering if it causes the same type of problem).

i5 4670k
Z87-GD65 MSi Mobo
16GB Ripjaws X Series 1600mhz
GTX 970 SC
5600RPM HDD
7200RPM HDD
DVDRW Disc Drive
PCI-E Network Card
 
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KirbysHammer

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Jun 21, 2016
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The overclock shouldn't be pulling more than 120 watts.


 
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BasicReference

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Hmm. Well, I guess I'll try 1.3 Vcore next, but if this is not recommended for 24/7 use as some people say, I'm not sure. I spend A LOT of time outside of work on here, and it is on most of the day (sometimes I just leave it on for days because I'm so lazy I don't want to wait 5 mins for windows to boot up). Also, it's nothing for me to drop 8-9hours into a game in one sitting. Is it worth it basically? Stable 4.5 Ghz with the possibility of degrading my CPU much faster? I know I'm asking a lot of questions, but really it's just because I want to get stable at 4.5ghz as quickly as possible as I have not been able to load it down or play any games for the past few days.
 
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