6700k Overclocking Questions

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Ghoststalker

Limp Gawd
Joined
Jun 4, 2001
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470
Hey folks,
I have an MSI Z170a-45g gaming motherboard. I am looking to tweak voltages a bit (I have a modest OC at 4.5ghz). Can someone explain to me what CPU PLL OC, CPU PLL SRF mean? I set them to their default values for now, I am having trouble locating any reliable information online.
 
Ghoststalker said:
Hey folks,
I have an MSI Z170a-45g gaming motherboard. I am looking to tweak voltages a bit (I have a modest OC at 4.5ghz). Can someone explain to me what CPU PLL OC, CPU PLL SRF mean? I set them to their default values for now, I am having trouble locating any reliable information online.
Click to expand...

These chips don't clock all that high, 4.5-4.6 is average with 4.8 being the max for most. Regarding PLL and such, you generally ignore those settings. With a 6700k, I'd not bother going higher until you relid/replace the TIM. Also have a look at the ROG 4.6ghz guide.

https://rog.asus.com/articles/guides/guide-overclocking-core-i7-6700k-on-the-maximus-viii-extreme/
 
I set them so to default voltages instead of auto. Seems stable so far. I noticed when running the x264 test from Reddit cores max around 77 to 78c. Seems hot to me, I think that's drawing around 1.38v. Using h100i v2 cooler. Should I go adaptive or fixed v? I prefer adaptive for the lower power consumption when not under load.
 
So those temps were when maxing at around 1.392v, so they seem not too terrible given it was higher then I thought. Truth be told I think I had a lot of confusion when I did my OC a while back, glad I looked at it again. I'd appreciative if someone can point me in the right direction. Ideally, I want stable at 4.5Ghz and to have the CPU voltage drop when it's not at load to conserve power.

*Edit* Realized I had windows in high performance mode, which is why voltage wasn't dropping. Doh!
 
At full load in X264 test CPU caps out now at around 75c, 1.332v full load (lots of vdroop with this board)
 
Ghoststalker said:
At full load in X264 test CPU caps out now at around 75c, 1.332v full load (lots of vdroop with this board)
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Vdroop is good, it's safer than the alternative. I run 4.7ghz at 1.344v under load, at 1.4v its 4.8ghz and in both cases with igpu off. At 4.5ghz with ipgu on I run 1.232v. The key though is that my cpu is relidded so that cuts literally 20c off my temps. You might want to look at delid/relidding.
 
Thought about delid but I've got the cpu oc protection plan. Seems like i can play with voltages more to find a lower one. It was drawing 1.392v and that was way more then needed.
 
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