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How to set constant Turbo boost?

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Hi all,
I have an i7-6700K CPU and I want to set its core clock to 4,2GHz all the time. No, I don't want to go higher (that's one of the reasons why I have a B200 serie MOBO), so please spare me the comments like "Buy a Z board, and OC to 5GHz" etc. I only want to maintain its Turbo Boost clock. How should I do?
I would do it on my own in this way (I have never done this before, so I need a confirmation of an expert):

CPU Base Clock: Default (100MHz)
CPU Ratio: 42
CPU Ratio Apply Mode: All Core
CPU Ratio Mode: Fixed Mode

Or is this setup absolutely wrong?
Thanks,
hazazs
 

bug

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Hi all,
I have an i7-6700K CPU and I want to set its core clock to 4,2GHz all the time. No, I don't want to go higher (that's one of the reasons why I have a B200 serie MOBO), so please spare me the comments like "Buy a Z board, and OC to 5GHz" etc. I only want to maintain its Turbo Boost clock. How should I do?
I would do it on my own in this way (I have never done this before, so I need a confirmation of an expert):

CPU Base Clock: Default (100MHz)
CPU Ratio: 42
CPU Ratio Apply Mode: All Core
CPU Ratio Mode: Fixed Mode

Or is this setup absolutely wrong?
Thanks,
hazazs
Sounds about right. But check what frequency the RAM is running at after making those changes.
 

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Hi all,
I have an i7-6700K CPU and I want to set its core clock to 4,2GHz all the time. No, I don't want to go higher (that's one of the reasons why I have a B200 serie MOBO), so please spare me the comments like "Buy a Z board, and OC to 5GHz" etc. I only want to maintain its Turbo Boost clock. How should I do?
I would do it on my own in this way (I have never done this before, so I need a confirmation of an expert):

CPU Base Clock: Default (100MHz)
CPU Ratio: 42
CPU Ratio Apply Mode: All Core
CPU Ratio Mode: Fixed Mode

Or is this setup absolutely wrong?
Thanks,
hazazs
That sounds correct. Are you also able set XMP for RAM? If so that simplifies this even more.
.
 
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On a non-Z board the answer is simple - you can't.

The 4.2GHz refers only to single core load. Anything more has turbo frequency of 4GHz.

There is no way to override it without OC (what does require Z). On some previous platforms it was possible, but skylake has no known workarounds (non-K OC is completely unrelated) ("multicore enhancement" is also unrelated).
All you can do is override power and current limit values, so the cpu does not drop below 4GHz no matter what kind of load happens. Leave other clock/ratio settings untouched, so during single core load it can boost to 4.2GHz.

Seeing you've already tweaked the memory - unfortunately there is nothing more to be done.
 
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from what I can infer he wants his cpu never to downclock.
disable c states and speedstep,set minimum cpu % value in power plans to 100%

as for 4.2ghz boost try xtu
 

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He wants to limit the single core frequency increase to 4.2 Maximum, nothing higher
 
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He wants to limit the single core frequency increase to 4.2 Maximum, nothing higher
but single core is boosting to 4.2 already at stock
 
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Its a tad safer to use the turbo for each core at x42 , and keep your baseclock at stock.

This way you have a fallback in case the CPU wants to throttle due to power or heat. And you are guaranteed to get into bios without a hot CPU.
 
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Sounds about right. But check what frequency the RAM is running at after making those changes.
That sounds correct. Are you also able set XMP for RAM? If so that simplifies this even more.

I have this RAM Kit: <click>
And yeah, it was one of my first doing to set the RAM settings to their SPD values via X.M.P. (to 2133MHz, 1,2V, CL13 from the default 2133MHz, 1,2V, CL15).

The 4.2GHz refers only to single core load. Anything more has turbo frequency of 4GHz.

Hmm. I have set the power plan to "Maximum performance" and the minimum CPU limit to 100%, and according to CPU-Z all the 4 cores move between 4 and 4,2GHz. So how is this possible then?

Anyway, my further power save settings in the BIOS are:
-Intel C-State [Auto]
-C1E Support [Disabled]
-Package C State limit [Auto]
-EIST [Enabled]
These are my MOBO default settings. All I want to reach is to prevent visual dips/hiccups in games due to a switch from a lower C-State to C0. Is this possible simply by setting the power plan in windows to maximum performance (which automatically sets the CPU minimum limit to 100%) and leaving every other settings at default?
 
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Hmm. I have set the power plan to "Maximum performance" and the minimum CPU limit to 100%, and according to CPU-Z all the 4 cores move between 4 and 4,2GHz. So how is this possible then?

That is confirmation of what he is saying. Core frequency and transistors 'switch' way faster than you can possibly monitor. The turbo ratios could be set between 40 and 42 for 1 ~ 4 cores loaded. So in the brief moments you don't have max load on each core, you can see them go to 42.
 
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All you can do is override power and current limit values, so the cpu does not drop below 4GHz no matter what kind of load happens. Leave other clock/ratio settings untouched, so during single core load it can boost to 4.2GHz.

I have set the minimum processor state to 100% by enabling the "High performance" power profile. Most of the time the CPU runs at 4GHz on each core, but monitoring the clocks for 3 hours this was the result according to CPUID HWMonitor:



For some reason each core drops rarily to 800MHz, even if I set EIST to disabled. Why? It should keep the 4GHz all the time, isn't it? What setting did I miss?

Thanks,
hazazs
 
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In windows you have to set power plan to max.

Control Panel\All Control Panel Items\Power Options
 
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I have set the minimum processor state to 100% by enabling the "High performance" power profile. Most of the time the CPU runs at 4GHz on each core, but monitoring the clocks for 3 hours this was the result according to CPUID HWMonitor:



For some reason each core drops rarily to 800MHz, even if I set EIST to disabled. Why? It should keep the 4GHz all the time, isn't it? What setting did I miss?

Thanks,
hazazs

CPU runs outside of TDP budget and it will clock back to get back under it. Doesn't have to be temp related. If the max power plan doesn't work from Windows, enter BIOS and set the package TDP limit at 250W.
 
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CPU runs outside of TDP budget and it will clock back to get back under it. Doesn't have to be temp related. If the max power plan doesn't work from Windows, enter BIOS and set the package TDP limit at 250W.

134253


Is these two settings what I need?

@Tibor Hazafi - Do you really need two active forum threads for the same topic? Why not ask the mods to permanently close one of these threads.

I will ask them to close the another one, thanks.
 
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View attachment 134253

Is these two settings what I need?



I will ask them to close the another one, thanks.

Precisely those yes. You can also max out the long duration maintained setting. These settings will not override any sort of overheat protection.
 
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I think you just your power mode for performance
 
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On a non-Z board the answer is simple - you can't.

Then why are those detaild OC settings in the BIOS at all?
 

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Then why are those detaild OC settings in the BIOS at all?

It's for those who want a mild overclock it won't be nearly as Extreme as a zboard it's like taking for example a low ended 970 based motherboard versus a top-end 990 FX motherboard
 
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Benchmark Scores Faster than yours... I'd bet on it. :)
You should be able to set the core multiplier as high as the single core boost and lock it there on locked boards. This has NO effect on your memory as you are not changing the bclk. But that coupled with setting windows power plan to performance, should do it.
 
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It's for those who want a mild overclock it won't be nearly as Extreme as a zboard it's like taking for example a low ended 970 based motherboard versus a top-end 990 FX motherboard

I just want to keep the turbo clock (4,2GHz) fixed on all cores. I hope this can be considered as mild.

You should be able to set the core multiplier as high as the single core boost and lock it there on locked boards. This has NO effect on your memory as you are not changing the bclk. But that coupled with setting windows power plan to performance, should do it.

That's exactly what I want. Furthermore it would be enough for me to keep the base clock (4GHz) all the time, and have the turbo boost on one core when necessary. I think it would be the exact point of the high performance power plan by default, but when I set it to that, which automatically sets the minimum CPU state to 100%, each cores still drop sometimes to 800MHz. Disabling EIST can't help either. When I disable the C-States, everything is fine (constant 4GHz), exept there isn't any turbo at all for some reason. I will try this today, maybe it works:
C-States [Auto]
C1E [Disabled]
C-State Packages [C0]
EIST [Enabled]
 
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The 4.2GHz refers only to single core load. Anything more has turbo frequency of 4GHz.
Maybe with certain boards but my i7 6700K before the OC, fully stock system, always boosted all cores together to 4,2 GHz during heavy workloads.

Otherwise it's pointless having all cores constantly running at eg. 4,5 GHz all the time because your system will not become any faster than it currently is. Rather apply some OC with appropriate voltages and set it to "adaptive".
 
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always boosted all cores together to 4,2 GHz during heavy workloads.

I thought the same regarding to my HWMonitor values:


But it's not true. Each of the cores can boost to 4,2GHz, BUT not at the same time. Maybe you can see that the current value of all cores are 4,2GHz at the moment, but it's just due to the high polling rate (1000ms most of the time) of the monitoring programs. They can't follow the clocks in real time. You can ensure about this on the official intel site:
134720
 
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Benchmark Scores Faster than yours... I'd bet on it. :)
I wouldn't fret over 200 MHz...

It's possible this budget chipset/board just can't do it. But if you have an option to set all cores, find it and do so. Even if it settles to 800 MHz, it does so on idle anyway... the ramp up is quick as heck and not really noticeable outside of benchmarks. Really.
 

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I have a B200 serie MOBO
For the all core turbo feature to work you need both a K series CPU and a Z series motherboard. On a B200 motherboard, the 6700K will be limited to its default specs.


It can only use the 42 multiplier when a single core is active. Without a Z series board, there is no way to get it to run the 42 multiplier all cores so stop trying.

If you are using a motherboard that is not a Z series board, you also need to enable the deeper C states like C3 or C6. If both of these C states are disabled then you will be limited to the 40 multiplier. This is how Intel Turbo Boost works.
 
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