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i5 4670K OC may be causing sound issues and video lag?

post #1 of 8
Thread Starter 
Hi all!

First, I'm totally new to this forum and also new to overclocking in general. I've looked through the Haswell OC guide (which is awesome) as well as the Gigabyte/Haswell guide (also awesome) and I have an issue that I'm not sure how to fix.

Basically, I have my 4670K OC'd to a modest 4.0 Ghz, with 1.15V and it seems stable as far as I can tell. I think Uncore is at 3.5Ghz, and I may have changed RING voltage to 1.1V something... I'll need to double check, but my problem occurred even when I left everything at default and only changed clock speed and voltage. Each time I notice it, I up my Vcore by .01V, restart and load the same thing that caused the issue and not notice it.
My cooler is a modest 212 EVO, and my motherboard is the Gigabyte Z87MX-D3H with BIOS version F6.
I run Intel Burn Test each time I change the voltage and do about 40 passes on High with a video playlist on youtube running. My most recent peak temperature is 77C.

My problem is that without fail, at least once or twice a day, I'll get noticeable static in my audio quality. This includes crackling, pops when something starts and ends, pops randomly, even audio stuttering. Once I had a Skype call with horrible audio static and lag, the video was just as laggy and incoherent as the sound. I increased the Vcore and I have not seen it happen since. But it still seems to mostly (almost entirely) happen when streaming video online like on gametrailers.com, cbs.com, and of course youtube. I've uninstalled, reinstalled flash with not change. I think I may have noticed some sound issues playing games like in Titanfall but I'm not sure. When it happens in online videos, and it doesn't always, it typically happens in the beginning when the video is loading and trying to establish a smooth FPS and stream. I suspect that it may be affecting the performance of online videos when it does occur but I'm not sure. CPU usage does not go that high when it happens... maybe about ~20% tops. This certainly didn't ever happen before I attempted overclocking. It tends to happen after my PC has been on for a while, I think. Any ideas why?

I've read that I may need to get a dedicated sound card... but why?

Thank you for reading this!
Edited by Dangqi - 4/13/14 at 1:07am
post #2 of 8
I had that with my new headset... basicly it was the **** drivers that came with the headset..

But i have also heard it was the OC.

My first question is, does this still happen when you run stock clocks?
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post #3 of 8
Give this tool a go:
http://www.thesycon.de/deu/latency_check.shtml

Helped me find nearly identical problem on a Gigabyte P35-DS3R (S775) motherboard.
Had weird audio lag, crackling etc.
Guess whut, caused by a damaged RS232 chip on the mobo. After disabling problems where gone!

Edit: How to use it; plug in every device normally connected to the PC and start the tool. Play some music or video's and watch for any spikes in the DPC tool.
Start unplugging devices till there are no more spikes.
Still spikes and everything plugged out of the computer? Start disabling unneccesary devices in the BIOS.
post #4 of 8
Thread Starter 
Thanks for the replies!

First of all, no I have not noticed the issue when I return to the defaults and stocks.
Additionally, this morning I have noticed lag (like mouse, windows explorer) for a while upon boot, but it eventually went away. This didn't used to happen you see.

As for the latency tool, a quick question first: what if it is a motherboard issue? How will I unplug it and check for latency?
post #5 of 8
Quote:
Originally Posted by Dangqi View Post

Thanks for the replies!

First of all, no I have not noticed the issue when I return to the defaults and stocks.
Additionally, this morning I have noticed lag (like mouse, windows explorer) for a while upon boot, but it eventually went away. This didn't used to happen you see.

As for the latency tool, a quick question first: what if it is a motherboard issue? How will I unplug it and check for latency?

One of my clients had a sound issue(static sounds, crackling) before and it turned out to be a bad ground at his surge protector. it was rather difficult to locate.

its just something to eliminate. if you have a extra one and a extra power cable give it a test. A bad ground at the outlet could cause some of this issue as well.

good luck thumb.gif
Edited by Wirerat - 4/13/14 at 2:56pm
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post #6 of 8
Thread Starter 
Hi thanks for the reply!

It doesn't look like it's a power strip or outlet issue.
I also used the latency tester and disabled almost everything but the system devices... no change. I am not sure which system devices are safe to disable. Oddly it is running worse today than last night.
post #7 of 8
Thread Starter 
Sorry for repost, but I just tried something that makes the audio and performance lag go away for a while. It doesn't fix it but it makes it subside for most of the day.

I adjusted my vcore by .01V. I noticed that every time I changed my Vcore or perhaps even clock speed, the lag would go away, whereas if I left it all as is it would get worse each day.

Any idea what is going on?
post #8 of 8
Thread Starter 
Bump?

I have not been able to do anything to permanently fix my problem (game performance also lags) so i returned it completely to stock settings, which the Turbo Boost reduced back to a max of 3.6Ghz. And now the issue never happens. I don't know why but it does not seem I can keep any sort of overclock without needing to change the voltage everyday. Odd thing is it doesn't matter what I do with the voltage, so long as I just change it.
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