Separate overclock speeds for 1-core turbo all the way up to all-core turbo?

[MGsubbie]

If all goes well I'll have my 8700k in Tuesday. I'm "only" cooling it with a Noctua NH-D14 so a 5Ghz+ all-core turbo doesn't seem feasible. But motherboards do allow you to set up different turbos for 1 core, 2 core etc, so I was figuring I'd try a 5Ghz+ 1- or 2-core turbo.. Yet I've never seen an overclocking guide where they did anything other than just adjust the all-core turbo. Is there a reason for this? Is it bad for your CPU to keep fluctuating in speed like that? Any other reason? Or is it a viable option?

[tp95112]

NHD14 is a beast of a heat sink. Beats most of the 240mm aios and up there with 280mm. Only way to have 2 cores to run at a specific clock is to disable all the other 4 cores and at that point you might as well hit yourself with a brick cause you can just buy an unlocked dual core

[MGsubbie]

1 minute ago, tp95112 said:

NHD14 is a beast of a heat sink. Beats most of the 240mm aios and up there with 280mm. Only way to have 2 cores to run at a specific clock is to disable all the other 4 cores and at that point you might as well hit yourself with a brick cause you can just buy an unlocked dual core

Wait, really? I thought the different turbos in the UEFI just base themselves on the specific load on the CPU?

[tp95112]

1 minute ago, MGsubbie said:

Wait, really? I thought the different turbos in the UEFI just base themselves on the specific load on the CPU?

Yes only with turbo(4.7), but if you are adding overclocking to it you disable boost

[MGsubbie]

1 minute ago, tp95112 said:

Yes only with turbo(4.7), but if you are adding overclocking to it you disable boost

Oh, so you're saying that the other cores still work if they are all used, but disable themselves if it goes for a 2-core turbo?

[done12many2]

14 minutes ago, tp95112 said:

Only way to have 2 cores to run at a specific clock is to disable all the other 4 cores and at that point you might as well hit yourself with a brick cause you can just buy an unlocked dual core

 

Actually, he can do it.

 

"Per core", also referred to as "Per usage" overclocking will allow @MGsubbie to accomplish what he's trying to do.

 

@MGsubbie all you need to do is setup a per core overclock to the values that work for you.  In keeping with what you originally wanted to do, you could set it up so that the multiplier is set to 50 when 2 or less cores are being utilized, 49 when 4 or less are being utilized and 48 when all 6 cores are being utilized.   Very easy to do.  The motherboard will handle the appropriate multiplier for use based on how many cores Windows or any applications are using at any given time.

[tp95112]

Just now, done12many2 said:

 

Actually, he can do it.

 

"Per core", also referred to as "Per usage" overclocking will allow @MGsubbie to accomplish what he's trying to do.

 

@MGsubbie all you need to do is setup a per core overclock to the values that work for you.  In keeping with what you originally wanted to do, you could set it up so that the multiplier is set to 50 when 2 or less cores are being utilized, 49 when 4 or less are being utilized and 48 when all 6 cores are being utilized.   Very easy to do.

Guess I was wrong. Would it cause instability issues though?

[DocSwag]

For my board at least you can set different max frequencies for certain amount of cores. You could definitely try tinkering with that.

 

I believe it should be something on any decent OCing board.

[DocSwag]

Just now, tp95112 said:

Guess I was wrong. Would it cause instability issues though?

Just stress test to confirm, as always.

[tp95112]

Just now, DocSwag said:

Just stress test to confirm, as always.

I mean all the fluctuation of clock speed, wouldn't voltage be affected?

[done12many2]

Just now, tp95112 said:

Guess I was wrong. Would it cause instability issues though?

 

Sure it will if you don't test it correctly.  Adaptive voltage combined with offset can allow you the ability to really dial in the voltage for this particular type of overclock.   You'll need to through a bit of single and multi-threaded loads at it for testing, but it's not too painful to setup at all.

[MGsubbie]

Just now, done12many2 said:

 

Actually, he can do it.

 

"Per core", also referred to as "Per usage" overclocking will allow @MGsubbie to accomplish what he's trying to do.

 

@MGsubbie all you need to do is setup a per core overclock to the values that work for you.  In keeping with what you originally wanted to do, you could set it up so that multiplier is set to 50 when 2 or less cores are being utilized, 49 when 4 or less are being utilized and 48 when all 6 cores are being utilized.   Very easy to do.

Okay, thanks for the info. Do you know why this is never a part of overclocking guides and reviews on major techchannels? It seems like a good solution to get just that little bit extra out of badly optimized games.

 

I saw that heavyload allows for stresstesting across any amount of threads, any idea if setting it to two threads means it'll just utilize the one core?

[DocSwag]

Just now, tp95112 said:

I mean all the fluctuation of clock speed, wouldn't voltage be affected?

Well yeah, but if you get a good LLC setting it shouldn't be too bad.

[done12many2]

Just now, tp95112 said:

I mean all the fluctuation of clock speed, wouldn't voltage be affected?

 

That's where adaptive voltage comes into play.  Adaptive turbo voltage only applies when the core is turbo'd.  Outside of turbo, voltage will always follows the CPU's programmed VID from Intel unless you use an offset in conjunction with the additional turbo voltage.

[done12many2]

2 minutes ago, MGsubbie said:

Okay, thanks for the info. Do you know why this is never a part of overclocking guides and reviews on major techchannels? It seems like a good solution to get just that little bit extra out of badly optimized games.

 

I saw that heavyload allows for stresstesting across any amount of threads, any idea if setting it to two threads means it'll just utilize the one core?

 

It's a fantastic feature and I assume that it's never part of reviews as it takes a bit more time to setup and test for stability.  

[MGsubbie]

1 minute ago, done12many2 said:

 

It's a fantastic feature and I assume that it's never part of reviews as it takes a bit more time to setup and test for stability.  

That's good news. If I stress test 2 threads in heavyload, would there be some way for me to confirm it's just using two threads on a single core? Or is there another piece of software you would recommend? Also, the non-boosted cores just stick to base clock, correct?

[done12many2]

1 minute ago, MGsubbie said:

That's good news. If I stress test 2 threads in heavyload, would there be some way for me to confirm it's just using two threads on a single core? Or is there another piece of software you would recommend? Also, the non-boosted cores just stick to base clock, correct?

 

Yes, you can use any software monitoring app that lest you see individual core clockspeed.  You'll see that when your are running one or two single threaded tasks that the clocks are moving up to a max of 5 GHz if that's where you set it, but the second you load all cores at once, the clock will drop to 4.7 or 4.8 if that's where you set your 6 or less multiplier to.  I'll try to capture a video of this for you to help you out.

[MGsubbie]

Just now, done12many2 said:

 

Yes, you can use any software monitoring app that lest you see individual core clockspeed.  You'll see that when your are running one or two single threaded tasks that the clocks are moving up to a max of 5 GHz if that's where you set it, but the second you load all cores at once, the clock will drop to 4.7 or 4.8 if that's where you set your 6 or less multiplier to.  I'll try to capture a video of this for you to help you out.

Oh yeah that makes perfect sense. If you could do that, I would really appreciate it.

[done12many2]

1 minute ago, MGsubbie said:

 If you could do that, I would really appreciate it.

 

Yeah, no problem man.  Give me a bit to get one set up for you.  It won't be perfect as I'm not going to take the time to dial it all in perfect, but you'll get to see what I'm talking about.

[done12many2]

@MGsubbie

 

Hopefully this helps bud.

 

I just setup a quick "per usage" overclock with 4 or less cores operating at 5.1 GHz, 6 or less cores at 5 GHz, 8 or less at 4.9 GHz, and finally 10 cores at 4.8 GHz. 

 

You'll notice that when all cores are used by any application, clock speed drops to 4.8 GHz.  When only 1 core is used, it scales as high as 5.1 GHz.  Pretty easy stuff.  Let me know if you have any questions or need help with it once you get your chip.  Good luck.

 

 

 

[MGsubbie]

7 hours ago, done12many2 said:

@MGsubbie

 

Hopefully this helps bud.

 

I just setup a quick "per usage" overclock with 4 or less cores operating at 5.1 GHz, 6 or less cores at 5 GHz, 8 or less at 4.9 GHz, and finally 10 cores at 4.8 GHz. 

 

You'll notice that when all cores are used by any application, clock speed drops to 4.8 GHz.  When only 1 core is used, it scales as high as 5.1 GHz.  Pretty easy stuff.  Let me know if you have any questions or need help with it once you get your chip.  Good luck.

 

 

 

Thank you for all the help.

[danzerman]

hi are you able to show what you edited in the bios mate?