9700k Overclocking - LLC Recommendation

A

Artificiary

Gawd
Joined
May 27, 2007
Messages
615
I just got my 9700k in from Newegg last night and have spent a few hours overclocking, but wanted to get some other folks thoughts on how I ought to configure my LLC and Vcore for daily use.

Here’s the question (I’ll post additional background info after).

For my 5.0ghz, all core, daily overclock, would you recommend:

1.) A lower LLC setting of Turbo (mobo is GB Z370 Aorus Gaming 7) with a bit higher Vcore (ex 1.350), or

2.) A higher LLC setting of Extreme with a bit lower Vcore (ex. 1.330)?


I’m still dialing in the lowest possible vcores, but both configurations are game and Prime stable (at least a couple hours each anyway) with Auto Uncore of 46 and no AVX offset. I also dial IA AC & DC down to 1 to limit some of the aggressive LLC vcore spikes.

As far as I understand, option 1 means a higher idle voltage (with adaptive / offset voltage disabled) and a bit more vdroop but potentially fewer aggressive vcore spikes. Option 2 means a lower idle vcore with less vdroop, but potential for more aggressive vcore spikes.

Regarding my 9700k, I didn’t win the lotto with this chip but it’s also not a complete dud. 5.2 boots into Windows at 1.41 Vcore (don’t want to push higher) but is very unstable. 5.1 seems ‘Prime95 small ffts’ stable (haven’t had long enough to really confirm) but requires ~ 1.4 Vcore and runs too hot for my tastes, even under a pretty beefy custom water loop (haven’t tinkered with AVX offset yet). 5.0 seems to be the sweet spot as I can keep core temps below 84c during prime95 small ffts and hwinfo shows MAX vcore only hits 1.380.

Thanks in advance.

Edit: I forgot to mention that I have all c-states enabled except C1E (had OC issues with it on a prior GB board and have just disabled out of habit).
 
Last edited:
how about go in the middle and 1.35 is the max you want for daily use.
 
Use the one that’s matching your set voltage closest under 100% load. For different vendors it might be different. Also, there’s no benefit in running constant voltage instead of adaptive.
 
Someone in another thread said that Turbo is closest to 1:1 so that would probably be your best bet. I think it would be easier to use turbo to set a maximum threshold that you feel comfortable with.
 
Artificiary said:
I just got my 9700k in from Newegg last night and have spent a few hours overclocking, but wanted to get some other folks thoughts on how I ought to configure my LLC and Vcore for daily use.

Here’s the question (I’ll post additional background info after).

For my 5.0ghz, all core, daily overclock, would you recommend:

1.) A lower LLC setting of Turbo (mobo is GB Z370 Aorus Gaming 7) with a bit higher Vcore (ex 1.350), or

2.) A higher LLC setting of Extreme with a bit lower Vcore (ex. 1.330)?


I’m still dialing in the lowest possible vcores, but both configurations are game and Prime stable (at least a couple hours each anyway) with Auto Uncore of 46 and no AVX offset. I also dial IA AC & DC down to 1 to limit some of the aggressive LLC vcore spikes.

As far as I understand, option 1 means a higher idle voltage (with adaptive / offset voltage disabled) and a bit more vdroop but potentially fewer aggressive vcore spikes. Option 2 means a lower idle vcore with less vdroop, but potential for more aggressive vcore spikes.

Regarding my 9700k, I didn’t win the lotto with this chip but it’s also not a complete dud. 5.2 boots into Windows at 1.41 Vcore (don’t want to push higher) but is very unstable. 5.1 seems ‘Prime95 small ffts’ stable (haven’t had long enough to really confirm) but requires ~ 1.4 Vcore and runs too hot for my tastes, even under a pretty beefy custom water loop (haven’t tinkered with AVX offset yet). 5.0 seems to be the sweet spot as I can keep core temps below 84c during prime95 small ffts and hwinfo shows MAX vcore only hits 1.380.

Thanks in advance.

Edit: I forgot to mention that I have all c-states enabled except C1E (had OC issues with it on a prior GB board and have just disabled out of habit).
Click to expand...

Would you kind posting the settings you used? I’m in the same boat, just with a Gigabyte z390
 
Thanks everyone for the suggestions. I think I’m going to try Turbo for long term use and dial down the Vcore as far as I stably can.

jpinard said:
Would you kind posting the settings you used? I’m in the same boat, just with a Gigabyte z390
Click to expand...

Sure. I’ve been running with Extreme LLC the past few days so here are the things I have adjusted in the Bios for that configuration. I’m at work so I can’t look up the full setting name / path, but let me know if my abbreviated setting descriptions are not clear:

—-CPU—-
CPU LLC - Extreme
Vcore - 1.330
CPU Multiplier - 50
IA AC LLC - 1
IA DC LLC - 1
C1E (c-state) - disabled

—-DRAM—- (will of course vary by ram kit but thought I’d include)
XMP - Profile 1
DRAM Voltage - 1.35

Any other overclock related settings are left with their default / auto values.
 
Artificiary said:
Thanks everyone for the suggestions. I think I’m going to try Turbo for long term use and dial down the Vcore as far as I stably can.



Sure. I’ve been running with Extreme LLC the past few days so here are the things I have adjusted in the Bios for that configuration. I’m at work so I can’t look up the full setting name / path, but let me know if my abbreviated setting descriptions are not clear:

—-CPU—-
CPU LLC - Extreme
Vcore - 1.330
CPU Multiplier - 50
IA AC LLC - 1
IA DC LLC - 1
C1E (c-state) - disabled

—-DRAM—- (will of course vary by ram kit but thought I’d include)
XMP - Profile 1
DRAM Voltage - 1.35

Any other overclock related settings are left with their default / auto values.
Click to expand...

So those IA AC and DC values. Can you explain them a bit more? Is that more or less voltage on them at those values? I’ve I never changed them before.

And thank you so much for posting your settings! They help tremendously

Also on the LLC. I thought the higher stuff would be more damaging than a bit more vCore. I’m running 1.32v vCore with “high” LLC. Not sure if that’s good, bad or what. I can’t do the prime95 with full avx @50 as it get way too hot. So I’m running @51 multi with the mentioned voltage, and an avx offset of 3.
 
jpinard said:
So those IA AC and DC values. Can you explain them a bit more? Is that more or less voltage on them at those values? I’ve I never changed them before.

And thank you so much for posting your settings! They help tremendously

Also on the LLC. I thought the higher stuff would be more damaging than a bit more vCore. I’m running 1.32v vCore with “high” LLC. Not sure if that’s good, bad or what. I can’t do the prime95 with full avx @50 as it get way too hot. So I’m running @51 multi with the mentioned voltage, and an avx offset of 3.
Click to expand...
No problem! Regarding IA AC/DC LLC, I was never able to find a good detailed description from Gigabyte documentation, but, based on feedback in other forums these settings will limit how high your voltage can spike when using LLC. I think my board had default values of AC 170 and DC 80 (may have been switched, had to write them down at one point). I did not test extensively, but I did notice HWInfo consistently recorded a lower ‘max’ vcore under load after lowering these from stock to 1.

I’ve heard the same about Extreme LLC, and normally wouldn’t try it, but for my board it seems to limit/regulate vdroop much better than Turbo. Because of the vdroop on Turbo I have to add more vcore which means slightly higher idle voltage than is required for Extreme.

All that said, I may be joining you in setting an AVX offset with a lower LLC. I spent a few hours messing with an AVX offset of 1 @ 51 multi and only needed a small amount of additional vcore compared to x50 and no AVX offset. It seems that 4.9-5.0ghz may be the ceiling for AVX instructions with traditional cooling on these chips.
 
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