Hey, quick question! Overclock

[infiniteCurse]

I have an i7 8700k and an Asus Z370E, ive been wondering what is the best LLC to overclock to 4.8 or 4.9? Im not looking to OC anything crazy, just a slight boost. Any help will be greatly appreciated.

[TahoeDust]

6

[Jurrunio]

Turn it off. Doesnt help.

[Streetguru]

4 minutes ago, infiniteblessing said:

I have an i7 8700k and an Asus Z370E, ive been wondering what is the best LLC to overclock to 4.8 or 4.9? Im not looking to OC anything crazy, just a slight boost. Any help will be greatly appreciated.

You want your LLC in the middle most likely so you hope for stable voltage, I think the max voltage for Coffee Lake is 1.4V? Probably want to stay as close to 1.3V as possible though. Did you already delid your CPU?

 

 

2 minutes ago, Jurrunio said:

Turn it off. Doesnt help.

It applies more/less voltage when you go under load, of course it can help.
 

 

[Jurrunio]

10 minutes ago, Streetguru said:

It applies more/less voltage when you go under load, of course it can help.

Just raise the base voltage with C-states enabled will do just as well, even without LLC. LLC is only for those who keep the CPU voltage high at all times because they are ill-informed or in an overclocking competition.

[TahoeDust]

13 minutes ago, Jurrunio said:

Just raise the base voltage with C-states enabled will do just as well, even without LLC. LLC is only for those who keep the CPU voltage high at all times because they are ill-informed or in an overclocking competition.

Have you done much overclock on Asus z370 boards?  I just overclock a 8700k on one over the weekend.  Level 6 LLC was working great.  Zero overshoot.

[Jurrunio]

4 minutes ago, TahoeDust said:

Have you done much overclock on Asus z370 boards?  I just overclock a 8700k on one over the weekend.  Level 6 LLC was working great.  Zero overshoot.

OP isnt aiming for 5GHz even. I reckon an 8700k doesnt need a tune in voltage settings at all to reach 4.8-4.9. He doesnt need LLC.

[TahoeDust]

1 minute ago, Jurrunio said:

OP isnt aiming for 5GHz even. I reckon an 8700k doesnt need a tune in voltage settings at all to reach 4.8-4.9. He doesnt need LLC.

So, are you saying just leave voltage in Auto and set all core to 4.8?  Yeah, no.  This weekend the resulted in ~1.4v and instant temp throttling.  

 

OP:  Try 1.25v at 4.8GHz, LLC set to 6

[DarkSmith2]

53 minutes ago, TahoeDust said:

Have you done much overclock on Asus z370 boards?  I just overclock a 8700k on one over the weekend.  Level 6 LLC was working great.  Zero overshoot.

thats almost true, im on Level 6 and set to 1.25v, im on 1.248v idle and 1.248v-1.264v on load.

[TahoeDust]

1 minute ago, DarkSmith2 said:

thats almost true, im on Level 6 and set to 1.25v, im on 1.248v idle and 1.248v-1.268v on load.

Nice.  I did not see any overshoot at 4.8GHz.  Was your overshoot during AVX instructions?  Either way, Level 6 seemed like the sweet spot for the machine I was clocking.

[Jurrunio]

1 hour ago, TahoeDust said:

So, are you saying just leave voltage in Auto and set all core to 4.8?  Yeah, no.  This weekend the resulted in ~1.4v and instant temp throttling.  

8700k at stock will already hit 4.7, so the voltage boom caused by overclocking with auto voltage wont be that serious. It's back when manual overclocking pushes an extra GHz on the CPU in which this is a problem.

[TahoeDust]

6 minutes ago, Jurrunio said:

8700k at stock will already hit 4.7, so the voltage boom caused by overclocking with auto voltage wont be that serious. It's back when manual overclocking pushes an extra GHz on the CPU in which this is a problem.

It hits 4.7 on a single core stock...or 4.7 on all cores with MCE enabled.  With MCE enabled users will see ~1.4v+ and very high temps.  Like I said, I literally just did this a few days ago.  Setting it at 4.8 and leaving it with auto voltage, it will increase the voltage extremely.

 

Please just stop, you really do not know what you are talking about in this case. 

 

 

[Jurrunio]

9 minutes ago, TahoeDust said:

It hits 4.7 on a single core stock...or 4.7 on all cores with MCE enabled.  With MCE enabled users will see ~1.4v+ and very high temps.  Like I said, I literally just did this a few days ago.  Setting it at 4.8 and leaving it with auto voltage, it will increase the voltage extremely.

 

Please just stop, you really do not know what you are talking about in this case. 

 

 

I have an 8600k on a Z370 Gaming 5 sitting beside me. Gigabyte boards are known for supply higher voltage than boards from other brands, but in this case raising to 4.8GHz on all cores with auto voltage only gives 1.38v under AIDA64 stress test.

 

Temperature depends on the cooler just as much as the voltage, so that's another topic.

[TahoeDust]

1 minute ago, Jurrunio said:

I have an 8600k on a Z370 Gaming 5 sitting beside me. Gigabyte boards are known for supply higher voltage than boards from other brands, but in this case raising to 4.8GHz on all cores with auto voltage only gives 1.38v under AIDA64 stress test.

 

Temperature depends on the cooler just as much as the voltage, so that's another topic.

Yeah...and 1.38v is about .15 (10%+) more than should be necessary and will run way hotter than it needs to.  Also, AIDA64 is a joke of a stress test.

[Jurrunio]

3 minutes ago, TahoeDust said:

Yeah...and 1.38v is about .15 (10%+) more than should be necessary and will run way hotter than it needs to.  Also, AIDA64 is a joke of a stress test.

his chip crashes at 1.34v at 4.8GHz so it is a horrible overclocker, so I wont call that 'way' hotter than it needs to

 

what stress test do you use?

[DarkSmith2]

1 hour ago, TahoeDust said:

Nice.  I did not see any overshoot at 4.8GHz.  Was your overshoot during AVX instructions?  Either way, Level 6 seemed like the sweet spot for the machine I was clocking.

na its always present, level 5 is lowballing voltage and level 6 is overshooting a little. I think it depends on a board to board basis.^^

But im taking the level6 its the closest to bios readings.

[TahoeDust]

2 minutes ago, Jurrunio said:

his chip crashes at 1.34v at 4.8GHz so it is a horrible overclocker, so I wont call that 'way' hotter than it needs to

 

what stress test do you use?

I guess I missed the post where his CPU was crashing at 4.8GHz with 1.34v.  Where did he post that?  Maybe not having the appropriate LLC was contributing to the crashes?

 

I use everything.  Prime95 and Realbench mostly....also OCCT and Aida64 just to make sure I am not missing anything.  Out of all of those, Aida64 is the most docile. 

[TahoeDust]

1 minute ago, DarkSmith2 said:

na its always present, level 5 is lowballing voltage and level 6 is overshooting a little. I think it depends on a board to board basis.^^

But im taking the level6 its the closest to bios readings.

10-4.  This is what I have experienced and read from others as well.  Lvl 6 is also what Der8auer recommends. 

[Jurrunio]

2 minutes ago, TahoeDust said:

I guess I missed the post where his CPU was crashing at 4.8GHz with 1.34v.  Where did he post that?  Maybe not having the appropriate LLC was contributing to the crashes?

 

I use everything.  Prime95 and Realbench mostly....also OCCT and Aida64 just to make sure I am not missing anything.  Out of all of those, Aida64 is the most docile. 

by his, I mean the chip I have beside me. It's my friend's system and I'm doing the overclock for him.

 

Oops, Prime 95 crashes the 1.35V 4.8GHz attempt as well. this chip sucks.

[TahoeDust]

4 minutes ago, Jurrunio said:

by his, I mean the chip I have beside me. It's my friend's system and I'm doing the overclock for him.

 

Oops, Prime 95 crashes the 1.35V 4.8GHz attempt as well. this chip sucks.

Well, I can tell you that my x299 Gaming 7 Gigabyte board has the best LLC I have ever used....I can turn it up as high as I want and it will never overshoot.  Maybe voltage droop is causing the crash.  Try turning it up LLC and test again.  Maybe it will help you get stable.

 

Keep in mind that stock the 8700k will only boost all cores to 3.7GHz.  4.8GHz on all cores is a 1.1GHz overclock.

[Jurrunio]

3 minutes ago, TahoeDust said:

Well, I can tell you that my x299 Gaming 7 Gigabyte board has the best LLC I have ever used....I can turn it up as high as I want and it will never overshoot.  Maybe voltage droop is causing the crash.  Try turning it up LLC and test again.  Maybe it will help you get stable.

gonna touch LLC later. Dont need LLC to test stable voltage under full load, but it can help drop idle voltage.

[DarkSmith2]

17 minutes ago, TahoeDust said:

10-4.  This is what I have experienced and read from others as well.  Lvl 6 is also what Der8auer recommends. 

yes he does, but he also has the little overshoot

 

[TahoeDust]

Just now, Jurrunio said:

gonna touch LLC later. Dont need LLC to test stable voltage under full load, but it can help drop idle voltage.

Without LLC it is going to take more voltage to be stable because of the droop when hitting full load.  Turn on LLC and you can probably lower the voltage.  But what do I know...I have only spent a few hundred hours tuning and overclocking z370 and x299.

[TahoeDust]

4 minutes ago, DarkSmith2 said:

yes he does, but he also has the little overshoot

 

Yup.  At 5GHz I would probably have seen a bit of overshoot.  At 4.8GHz, I didn't see any. 

 

How much votage do you think it would have taken to be stable without LLC like someone else in this thread is trying to do?...lol

[Jurrunio]

Just now, TahoeDust said:

Without LLC it is going to take more voltage to be stable because of the droop when hitting full load.  Turn on LLC and you can probably lower the voltage.  But what do I know...I have only spent a few hundred hours tuning and overclocking z370 and x299.

I read the voltage reading (vcore) on the fly with software. Not the most accurate way, but the same number reported with and without LLC should say that the CPU gets the samer amount of voltage under full load