Instability with 4670k OC

alzerm

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Oct 6, 2013
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10,510
Picked up a 4670k, Z87-A and H80i the other day to upgrade my old system. I've been trying to OC it the past few days but I am confused at this point.

Here are my relevant specs

CPU: 4670k
Mobo: Z87-A
RAM: G.SKILL Ripjaws Series 8GB (2 x 4GB) 1333 (F3-10666CL7D-8GBRH)
CPU Cooling: H80i Push/Pull SP120's
PSU: Ultra LSP650 650-Watt

I've looked around and even asked on other sites such as overclockersDOTcom as to how I should go about OCing and so far things are not making sense. I tried the 1.25v x46 boot to get a feel for the chip and it made it to the desktop with ease. I then decided to tweak things a bit and try a stresstest w/ Prime under the following settings

CPU multi at 45 voltage at 1.25
CPU cache multi at 43 voltage a 1.15
Mem at 1300 7-7-7-21 1t at 1.5v
Speedstep disable
Turbo disabled
C states disabled
LLC set to level 8

I'd run prime for about 14-25ish mins and it'd crash. Tried a variation of other tweaks with that voltage on the cpu but no luck. Only been able to keep 4.2 stable at 1.25v (was too lazy to try it at a lower temp) in prime for exactly an hour.

Also when I first installed the H80i I cleared the paste it came with and applied about 3-4 small dots together of MX-2. My idle temps were in the high 30's to low 40's. When I'd place it under stress even up to 1.27v at x45 (no other settings changed) I would crash after 15ish mins but temps never left the 70's. Now at 1.25v after a few mins it jumps to 80's and peaks out around the high 90's before the typical 20min crash in prime. The reason I brought this up is because since this was my first intel build I was unaware that the 4th core was sometimes 10C lower than the rest under load so I reapplied the paste again twice. The 1st time with a smear method and the 2nd (what it is on now) with the single small drop method. What confuses me about this now is that my idle temps at stock settings are in the mid 20's but under load at 1.25 they make it past 80C within a few mins :??:

I'm aiming for 4.5 since apparently if you can boot with 1.25v at 4.6 it's a decent chip. As of right now it's looking like a below average chip If I'm going to need more than 1.25v for 4.3

Any tips/info would be appreciated. Thanks!
 
Solution
I'm proud of your efforts. Considering what you've been dealt, it looks like you're really determined to focus on what you can control and maximize your chip's abilities. I hope you are enjoying the process and learning a lot from it. It's refreshing to see such resilience!

jnewegger23

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How are you acheiving your oc? Are you manually changing everything in the bios or are you using a software suite? I recommend against suites as they tend to push a higher vcore yielding unnecessary heat at weaker oc's. Manually when patient and methodical you can learn the most about your specific chip and what it can and cannot handle. I don't know what guides you've been following but try a decent setting like 4.4GHz with 1.25v. Go up to 4.5Ghz and just run intel burn test, it gets hot fast and you can stop it on the spot but takes a finite amount of time to pass. While you're finding your right setting you'll hit the 80s and 90s which is uncomfortable for the long run but it happens. If it passes intel burn test on standard then lower your vcore to 1.2v if that doesn't crash, hang or bsod. If it works then lower it again to 1.15 (will most likely crash at 4.5GHz unless you have a better chip than mine). Go up to 1.19, if it survives without crashing haning artifacts etc then go down to 1.18, you'll eventually find your "sweet spot" for 4.5GHz and it may be higher than the example I'm giving and be more like 1.2v for all we know or your chip might not be a good ocer and you might need to to the same thing at 4.4GHz instead, either way, if you can acheive that and notice that we kept lowering vcore so of course you'll run cooler as we progress (if we progress). My 247oc I settled on was 4.4GHz w 1.145Vcore +.0085 manual offset. This rarely goes past 60c under load, 70s when on prime95 for hours on end. That's what I like but I did hit 4.8GHz once before when I was trying to figure it all out but I was maxing out at 97c which was way to hot for me even though it was stable. So, hopefully you'll find that vcore that gets temps at an oc your happy with. Once you're there you can then try a manual offset; read guides on that but the basic idea is it gives you an absolute value of how much overvolting it will do to give your vcore more when it needs it for a given oc setting if it's a + offset; the opposite for a negative one and how to find that is more than this tired guy is going to type. Anyhow, this further allows you to decrease your vcore a little bit more giving that final fine tuning. Some can't get a good offset though but that's a few steps ahead of where you are at for the moment but will be fun once you get there. Hope this helps!
 

alzerm

Honorable
Oct 6, 2013
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10,510


Thanks for the response jnewegger!

I am using the uefi for all my modifications. This is the guide I started with and also look around on threads to see what people were saying. I have used Prime and Aida64 so far to stress. I tried the FPU test with Aida and it push my chip to 100C in seconds so I haven't touched that since. Been using prime with hw monitor and cpuz to watch and verify settings.

I thought the offset was for OC'ed ram? I have 1333 ram and I am running it at what the packaging says which is 1333 7-7-7-21 @ 1.5v (few years old so I might test it later).

Also I ran some tests last night and just now under these settings

Stable 1 hour (stopped to make modifications) Temps hit high 90's but stayed in the high 80's most of the time.
1.9 inputv
x43 cpu
1.23 cpuv
x41 cache
cachev 1.195
130% cpu current capacity
power phase extreme
LLC level 8

Second attempt

Error a bit after 10 mins

1.95 cpu inputv
x44 cpu
1.237 cpuv
x41 cache
cachev 1.195
130% cpu current capacity
power phase extreme
LLC level 8

Tried again this morning

16 mins and temps jumped to 100C so I stopped

1.9 inputv
x43 cpu
1.23 cpuv
x41 cache
cachev auto which is 1.1xx
auto cpu current capacity
power phase extreme
LLC level 4

From the first test to this last test why have my temps increased? If anything they should be lower right? Or could the auto cache and current capacity voltages be fluctuating? I will test in a second with those two temps set specifically at their "default" voltages and see what my temps are.

Once again thanks and any knowledge or insight would be greatly appreciated!

Edit: Temps went up

1.78 inputv
x43 cpu
1.23 cpuv
x41 cache
cachev 1.195
cpu current capacity 100%
power phase extreme
LLC level 4

Input voltage, current cap or LLC are helping with temps a bit it seems
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jnewegger23

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Man this isn't looking good. It seems like you've got a bad oc'er. Not a bad chip in general just not good for overclocking. She looks like she just doesn't want to go past 4.3GHz with what your reporting.
With regard to offset, you utilize that in lieu of LLC (basically that's auto offset if you think about it but with your issues atm let's worry about that later). First though you have to find that sweet spot at the highest oc with the lowest vcore giving you those low temps but for your chip it looks like your "highest" oc is about 4.3 and your heating up pretty bad there already.
This all said perhaps you reseated the h80i poorly. Use some arctic clean ($7 kit from newegg; no, I don't work for them) or some isopropyl alcholo if you have that instead and clean it like new, use pea method (youtube if you're not sure) and really clamp that h80i down (don't break your mobo but use assertive force; screw tight but not crazy tight). Also, I use my h80i as intake but my rig is in a 600T case so make sure you have similar venting before changing anything. I had similar issues to you before and little this and that and I got where I wanted so I'm not 100% that your chip isn't a good oc'er yet but it's not looking good so you have to try PITA (pain in the you know what) stuff. Good luck, please update when you get a chance but take your time! Remember, methodical and patient gets you the best results! Harder to do as it gets more challenging but you learn the most when it's hard. Have fun!

Thanks,

Justin S.
 

alzerm

Honorable
Oct 6, 2013
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10,510
I resat the heatsink and bent 2 pins in the process earlier (I nearly soiled myself haha). That dropped temps down a bit under load. Where I'd see high 80's I now see low 60's. Currently trying to see if I can get 4.4 without bumping voltage up too high. I'm on 1.225 right now w/ input voltage at 1.9v. The rest is auto. Going to test in a few and see if it BSoD's on me. I keep getting 124 error which I read somewhere is a lack of voltage whne OC'ing. Will go to 1.35tops before I try and tinker with cache and cpu current cap, LLC or power phase levels again. This is where I believe it might get a bit complicated (the fine tuning) so all help is appreciated. Thanks again dude/dudet haha
 

jnewegger23

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Wow, those are way better temps! Now you can have some fun. Just be methodical. Have fun! Best of luck to you! I'm totally a dude. Justin is a boys name, Justine with an e would be a girl. So totally a dude!

Thanks,

Justin S.
 

alzerm

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Oct 6, 2013
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10,510


I didn't read the end of the previous reply so I didn't know if you were male or female haha. Well now I'm stuck at 1.2v 4.3ghz. Stable there but If I go 4.4 I need more voltage and it warms up way too close to 100C. I am also noticing some things are sluggish especially when gaming. Was playing BF4 with ultra settings and it was sluggish as hell. Played with stock clock and same gfx settings and it ran flawlessly. Had no problem running my OC'ed thuban before with the same settings (was OC'ed to 3.7 via FSB). Think it could be the cache multi? I have it set to stock since I was still try to find my highest cpu multi without hitting my heat wall. I'm fine staying at 4.3 but want to find stability and if possible even drop the temps. Any tips on how to find a good voltage/multi for the cache? Haven't had time to check this vid but at the start of it the guy talks about the cache for stability.
 

jnewegger23

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I haven't had to play with multi-caching on my newer systems. It can be useful but I'd have to see what's effective or not as it wasn't necessary in any of my latest builds. I'm not sure how methodical you're being or if your chip is just not that good. I think we've tried most of what's typical. I saw the vid is 36min long. Don't have time to watch something like that atm but if I do I'll let you know what I think of it. Just be methodical if you apply anyone's approach including mine and make sure you understand what change caused what. If you change too much at once you'll spend a month or more trying to find that optimal oc when you can have it within the week or a couple of days depending on how much free time you have vs work. Keep me posted! I think you're getting there and learning a ton so it's all good bad chip or not!
 

alzerm

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Oct 6, 2013
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10,510


Well I watched the first two parts of the video series. With Intel XTU I am apparently stable at 4.4 with 1.21v and temps are peaking at 78C tops. Going to try getting my cache in a 1:1 ratio now and then OC my ram if possible lastly.
 

jnewegger23

Distinguished
I'm proud of your efforts. Considering what you've been dealt, it looks like you're really determined to focus on what you can control and maximize your chip's abilities. I hope you are enjoying the process and learning a lot from it. It's refreshing to see such resilience!
 
Solution

alzerm

Honorable
Oct 6, 2013
18
0
10,510
I was bit by the OC bug when I first OC'ed my thuban just over 1.1ghz with an EVO 212. If it weren't for the haswell's temps and my h80i I'd easily push for 4.8ish. Going to def delid this further down the line so I don't void it right off the bat. Will be back with results later. Thanks for the tips man.