open source project intel cpu throttle control

Here are the binary and source files: https://www.mediafire.com/folder/h0alg5q8agx87/OpenCPUControl

Release_alpha_0_2.zip is the binary, download and extract and run OpenHardwareMonitor.exe , you will need .net 4 runtime since I upgraded the open hardware monitor code from .net 2
the other zip is the full source file

I get the multiplier set working so you should be able to request the highest multiplier to be used , same as TS you need to set power policy to max performance.
I also put a turboboost disable/enable checkbox to control turboboost

screenshot:


don't complain the UI since I haven't had much time yet, on 1st run you won't see the extra buttons so you need to resize by expanding the window to the right or maximize the window, next time it will remember the window size

min and max multiplier values are loaded by default but not the turbo ratio, you need to click the get turbo max button to load the multiplier value for turboboost, after you should be able to see the ratio to turbo if you go up

press the set multiplier button to request the multiplier selected

when you quit the program I suggest you change back the multiplier to max before you quit and change power policy to balance. I believe changing power policy to balance is enough to reset , if still has issue you could try using TS or reboot

Limitations for the time being:
-open hardware monitor uses the regular .net timer so data refresh a lot slower than TS or even task manager (the Win 8 one which show you cpu speed), if you need more accurate values just run TS6 or task manager in win8
- cpu multiplier set only support SandyBridge & potential later generations
-I only tested using my sandy bridge cpu 2670qm so your mileages may varies and I don't hold responsibility for any issue, that said this tool does not disable any thermal protection so is pretty safe

change log:
v0.2
- added Lock max checkbox which will attempt to re-request max multiplier during refresh in case the value got reset by wndows , checking this should make the set multiplier change mostly persistent
- display all thread multiplier value instead of only the non-HT thread

v0.1
initial

-----------History line --------------------------------------------------------

well given there is no more TS7, I am planning to create a open source alternative instead since I need to control my laptop cpu (i7 2670qm -y470/gt550m) so I can play fsx smoothly without cpu cycle from max to min due to heat throttle

I am going to base my code on Open Hardware Monitor - Core temp, fan speed and voltages in a free software gadget since they are the one created the winring0 driver that allow us(including TS) read/write msr (model specific register) to control cpu. I am familiar with C# and able to read low level code like C for reference

my 1st aim is to able to control cpu speed through FID and this would be only for core i series for now (since I only have a i7 2670qm and i5 (work laptop - t430s i5 3320m) )
Updated Status : this is done!:

-to start with I am going add display for FID to openhardwaremonitor to get myself familiar with the msr function provided by WinRing0 Status: Done:
-after able to read FID I will look at adding control FID/turboost Status Done:

There is no timeline but I am positive given all the public information available I think we will be able to achieve this Status Status first alpha version done:

after I am able to read msr I will provide/setup code repository, it will be a fork of current openhardwaremonitor

Reference material for technical people:
intel manual including msr usage
Intel® 64 and IA-32 Architectures Software Developer’s Manual V3 - chapter 35

https://communities.intel.com/thread/27660
https://software.intel.com/en-us/forums/topic/405640
https://software.intel.com/en-us/forums/topic/533803
linux - Understanding Processor Frequency part of cat /proc/cpuinfo - Super User
Linux source code for cpu frequency control for reference
https://github.com/torvalds/linux/blob/master/drivers/cpufreq/intel_pstate.c

 

Can you also add voltage control like TS had?

 

unsure yet because from what I read VID is controlled by motherboard, well it is too early stage until I have figure how to control FID then we can go from there. Probably need to see if linux has any code to do VID control and use it as a reference

 

added 1st version which allow one to request multiplier and disable/enable turboboost, see 1st post for detail

 

posted 0.2 which add a checkbox to attempt to keep the max multiplier by re-requesting when values is increased by windows

 

great work so far, not very useful to me without voltage control though. I'm sure many users will find this useful now that TS is no longer being developed.

 

unfortunately I currently don't have a cpu that can adjust voltage, I believe only haswell allow voltage change?

that said this is a far stretch from current progress, the intention of this project is more a proof of concept and provide a reference implementation that people can work/tinker with. (so if it is no longer developed people can pick it up)

a lot of major work still need to be done to catch up to TS

e,g
-high resolution timer
-accurate report of multiplier and clock speed (at least catch up to win 8 task manager accuracy for cpu speed reporting)
-C0 % spent
-power saver
-multiple profiles

I would also like to add a more fine grain control of multiplier (similar to TS profile switching but TS only allow you to switch to 1 profile on 1 cpu or gpu temp (, I am thinking a step control which slowly reduce cpu speed to find the optimal speed without cpu throttle kick in. This could be done after I rewrite the current code with a high resolution timer & accurate data report

voltage control I can only do if someone provide the information on how + have access to cpu to test, low priority for me now since I only have a sandy bridge i7

The good thing is if code is available from linux it is easy to port over (much of the multiplier set/turbotboost control I added are based on linux intel_pstate code)

so ya at this point I am still in catch up phase but at least we have a codebase to start with

 

I have a 3940XM and will be testing this tomorrow.. Will let you know if there are any areas for improvement ..

 

Works great on my HP 840 G1 Laptop! It has a Intel Core i7-4600U CPU. Will give it a test on my tri-core i7 desktop at home later on. Thanks!

 

Since when has a tri-core i7 existed?

 

Since I just made it up So feel free to ignore my idiocy

I think I have an i7, and it shows 6 cores, so technically I think it is actually powered by a dark arts wizard, but not the really bad ones, just they ones that sacrifice virgins to the dark lord.

OK, so It turns out I have a six core CPU, my utmost apologies, it is a i7-990X ( ARK | Intel® Core™ i7-990X Processor Extreme Edition (12M Cache, 3.46 GHz, 6.40 GT/s Intel® QPI) ). So when I get home I'll give it a go

 

It's a hexacore CPU

 

Ah, well there you go, I nearly had it..... and by nearly I mean not at all And I know what you are thinking, man it must be a long trip home as he hasnt posted results. Well my trusty home pc steed decided to have a small holiday from actually working, so my feedback probably ends with jsut the results from my HP 840 G1 laptop, which is more important anyway, as it throttles like a without outside assistance!