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Windows 10 and Single Threaded Turbo Problems?

Zarathustra[H]

Zarathustra[H]

Extremely [H]
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Oct 29, 2000
Messages
42,280
Hey all,

So like I think most people do, I overclock my CPU by using the turbo core method. So the base clock of the CPU remains unchanged, but the max turbo is changed.

Right now I am at 4.8Ghz. All cores turbo up to 4.8Ghz as expected under full load.

I'm having an odd problem with single threaded loads though. I will load up Cinebench. If I do a all cores run, all cores hit 4.8Ghz as expected, but if I do a single threaded run, it never clocks the core during th ework up like expected. It stays at 3.3Ghz or so.

What I remember from the past is that even in single threaded runs, the working core would get the max possible clock, and the other cores would stay at lower clocks to save power.

Is anyone else having this issue? Is it a Windows 10 problem? Since I rarely load up ALL my cores in real life non-testing workloads, I am getting much worse performance.

For instance, in my single threaded Cinebench R11.5 run, my expected single threaded performance is close to 2, but I am scoring 1.1.

When I do the full all threads test, I am getting expected performance though.

Any thoughts?

I would imagine this could really hurt game performance, where usually you only have one or two threads that are really maxing out, and a bunch of other threads doing light stuff.
 
Some applications have those kind of problems when the windows power plan is set to balanced or power saver.. have you tried changing it to performance mode?. personally, I do not have the mentioned issue in any of my machines.. including 2 3930k..

is this issue happening in other applications?. for example Cinebench R15?
 
Araxie said:
Some applications have those kind of problems when the windows power plan is set to balanced or power saver.. have you tried changing it to performance mode?. personally, I do not have the mentioned issue in any of my machines.. including 2 3930k..

is this issue happening in other applications?. for example Cinebench R15?
Click to expand...

Yep, that did it.

Thank you. I was on balanced. Much improved when moved to "Performance". And if CPUID's wattage estimates are anything to go by, doesn't look like it had a huge impact on power use either.
 
it really doesn't have any major impact on power, you can still use performance mode and set minimum processor state to 1% and the CPU will downclock is that is what you desire to do, but they will be much more sensitive to any load than what it was under balanced mode. balanced is way more conservative at the moment of increase the clock, which it's certainly good for day to day operation on mobile environment.
 
Makes me wonder how many people out there are complaining about being CPU bottlenecked in some game, but really all they need to do is change the power setting :p
 
I think in my experience none, really.. I haven't found a game that doesn't work properly ramping up the clocks if needed even in power saving mode.. I think it may more a thing of some apps not fully coded for the windows version, in example, even the latest CB R15 read windows 10 as Windows 8.. so the fact that is not updated properly for the OS may represent that kind of issue.

On the other hand, Motherboard Chipset with the Intel Management Engine Interface have a considerable job on how the cores/thread/clock are treated under windows in real time...
 
Araxie said:
I think in my experience none, really.. I haven't found a game that doesn't work properly ramping up the clocks if needed even in power saving mode.. I think it may more a thing of some apps not fully coded for the windows version, in example, even the latest CB R15 read windows 10 as Windows 8.. so the fact that is not updated properly for the OS may represent that kind of issue.

On the other hand, Motherboard Chipset with the Intel Management Engine Interface have a considerable job on how the cores/thread/clock are treated under windows in real time...
Click to expand...


Ahh, I was thinking maybe older titles
 
Araxie said:
On the other hand, Motherboard Chipset with the Intel Management Engine Interface have a considerable job on how the cores/thread/clock are treated under windows in real time...
Click to expand...

?

IMEI is part of vPro remote management, I don't think it has anything to do with the CPU performance operation. Personally have it disabled in Device Manager in all my builds.
 
Meeho said:
?

IMEI is part of vPro remote management, I don't think it has anything to do with the CPU performance operation. Personally have it disabled in Device Manager in all my builds.
Click to expand...

Yes and Nope.

vPro remote management does use Intel management engine interface, but is not part of it, vPRO remote management use part of IMEI for privileged net management and operations, IMEI in general is what allow real time BIOS management as change BCLK, CPU multipliers, voltages, offsets, LLC, and large etc of BIOS features, it's also what allow to motherboard utilities as example Asus AI Suite to work as intended and enable features as one click auto-overclock.. also is worth to mention that IMEI work very, very close with the windows kernel scheduler for all I/O chipset operations which is directly translated into optimal motherboard performance under windows..
 
the kernel.org archive is extremely outdated being the newer platform X38.. but its your own wikipedia link which confirm in part my statements with as it state Intel Active Management as part of the IMEI, Intel Active management isn't the same as Intel management engine interface and the software design state the following:

Firmware modules:

Quiet System Technology (QST), formerly known as Advanced Fan Speed Control (AFSC), which provides support for acoustically-optimized fan speed control, and monitoring of temperature, voltage, current and fan speed sensors that are provided in the chipset, CPU and other devices present on the motherboard. Communication with the QST firmware subsystem is documented and available through the official software development kit (SDK).
Click to expand...

This is what allow all the magic tricks with the motherboard chipset real time management via manufacturer software.. you can easily install again as example Asus AI Suite without IMEI and everything will pop errors including undetectable PCI-E slots, undetectable BCLK and only able to edit max CPU multiplier to the max selected in the BIOS.. IIRC since Sandy Bridge IMEI it's completely integrated into the PCH instead of a dedicated controller being one of the reason now one can do so many things in real time via windows, instead of have to reboot everytime you want to modify a bios parameter for overclocking.
 
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Ah, I've never used MBO utilities.

What about "IMEI work very, very close with the windows kernel scheduler for all I/O chipset operations which is directly translated into optimal motherboard performance"? I get the remote/windows monitoring and control, but why would it be related to I/O operations?
 
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