ThrottleStop ThrottleStop 8.30

October 11th, 2016 - What's New
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Publisher: Kevin Glynn
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ThrottleStop is a small application designed to monitor for and correct the three main types of CPU throttling that are being used on many laptop computers.

The left side of ThrottleStop contains a variety of options which can be used to bypass CPU throttling and on the right side is a Monitoring panel that shows you the current state of each thread on your CPU.

Some laptops are using clock modulation and multiplier reductions to lower the performance and power consumption of your computer. This is done deliberately to either allow your computer to run cooler or to allow your laptop to operate with a power adapter that is not sufficient to fully power your laptop and recharge its battery at the same time.

When using ThrottleStop, it is strongly recommended to monitor power consumption at the wall with a Kill-a-Watt meter or similar device and make sure that you don't exceed the power capabilities of your power adapter. Use of ThrottleStop to bypass these throttling schemes is at your own risk and can result in permanent damage to your power adapter or computer or both which may not be covered by your warranty.

Version History

ThrottleStop 8.30 (October 11th, 2016)

ThrottleStop 8.30 - October 6, 2016

New Features
- added Energy Performance Preference (EPP) adjustment to Speed Shift feature.
- added Limit Reasons reporting for Xeon E5/E7 v3/v4, CPU only.
- two new mini mode features.

ThrottleStop 8.20 - September 13, 2016

New Features
- integrated Limit Reasons into TS and added Skylake support.
- added Min / Max package power reporting.
- added Intel Speed Shift adjustment for any OS.
- improved BCLK and multiplier reporting for Skylake CPUs.
- improved Windows 10 icon compatibility.
- initial Kaby Lake support.

ThrottleStop 8.10 beta 2 - March 16, 2016

New Features:
- redesigned the C State Interrupt Response Limit feature.
- changed microcode reporting in the FIVR window.
- fixed possible bug where log file could grow forever if log file does not exist.

ThrottleStop 8.10 beta 1 - March 4, 2016

New Features:
- added PowerCut feature.
- added 4th Gen and up microcode reporting.
- improved Skylake U compatibility.
- C State reporting and SLFM bug fix.

How to Enable PowerCut on 4th and 5th Generation Core i CPUs.
- with laptop plugged in and running on AC power, press the FIVR button to open the Turbo FIVR Control window.
- change the VCCIN CPU input voltage from Default to a fixed value. (~1.75 V)
- check PowerCut and agree with the warning message.
- with CPU idle and power consumption low, push Apply.  PowerCut should now be reported as Enabled.
- if PowerCut is Enabled, power consumption reporting will no longer be accurate on some CPUs.
- this can help eliminate throttling based on power consumption. (PL1 & PL2)
- another big thank you for Dufus at NBR.

ThrottleStop 8.00 beta 7 - January 21, 2016

New Features:
- added Power Limit 3 (PL3) Lock and Disable feature.
- disabled Limit Reasons in the log file for Skylake CPUs.

ThrottleStop 8.00 beta 6 - December 29, 2015

New Features:
- enabled overclocking and voltage control for 6th Gen Skylake CPUs.
- added FIVR Faults and FIVR Efficiency adjustment for Haswell and Broadwell CPUs.

ThrottleStop 8.00 beta 5 - November 1, 2015

New Features:
- added Limit Reasons reporting to the log file.
- fixed Atom Braswell power consumption reporting.
- another Skylake tweak.

Limit Reasons Definitions
TEMP - Thermal Event
MAXP - Max Performance Limit
VR   - Voltage Regulator
EDP  - Electrical Design Point (current)
PP0  - Core Power Limit
PL1  - Long Term Power Limit
PL2  - Short Term Power Limit

ThrottleStop 8.00 beta 4 - October 14, 2015

New Features:
- fixed Skylake C0% reporting
- reduced max VCCIN slider from 2.50 V to 2.30 V
- fixed VCCIN profiles not being saved correctly.
- fixed Haswell reporting C8 / C9
- added C7 Interrupt Response Limit adjustment.

ThrottleStop 8.00 beta 3 - October 6, 2015

New Features:
- added 4th Gen VCCIN reporting and adjustment.
- added Non Turbo Ratio reporting and adjustment.
- added an option to delete the Notification Area icon.
- improved support for 6th Gen and low power Braswell / Cherry Trail Atom CPUs.
- started a work over of the Turbo Power Limits window.

ThrottleStop 8.00 beta 2 - May 15, 2015

New Features:
- ability to change the Log folder and Limit Reasons location.
- TS Bench changed back to the original algorithm.
- minor changes to the TS Bench layout for improved high DPI support.
- added a Default Cache on Stand By option.
- more intuitive Offset Voltage Range adjustment.
- TDP Level multiplier reporting for the U CPUs.
- fixed Bay Trail power consumption and C State reporting.

ThrottleStop 8.00 beta 1 - April 19, 2015

New Features:
- added FIVR voltage and 4th Gen overclocking control.
- real time reporting of FIVR voltages and cache ratio.
- added support for 6 or 8 core CPUs, Atom Bay Trail Silvermont and Xeon CPUs.
- added reporting of Overclocking Bins for Sandy Bridge and newer Core i CPUs.
- added adjustable primary plane power limits
- updated Nvidia GPU monitoring code for improved Optimus support.
- added adjustable Windows timer resolution feature.
- fixed ThrottleStop opening up from the taskbar when already running.
- blocked access to the Turbo Ratio Limit adjusters when they are locked by the bios.
- fixed a bug when exiting the main window during a TS Bench test.
- included add on program, Limit Reasons by Dufus that shows why CPUs are throttling.

ThrottleStop 8.10 Beta 2 (March 31st, 2016)

New Features:

  • Intel 4th Generation Core i Haswell CPU support.
  • TDP Level Control for the ULV processors.
  • Report of throttling due to TDP limit or CPU package temperature.
  • Added PROCHOT (processor hot) offset reporting.
  • Improved Windows 7 and Windows 8 system tray / notification area icon support.

ThrottleStop 6.00 (October 22nd, 2013)

New Features:
- Intel 4th Generation Core i Haswell CPU support.
- TDP Level Control for the ULV processors.
- report of throttling due to TDP limit or CPU package temperature.
- added PROCHOT (processor hot) offset reporting.
- improved Windows 7 and Windows 8 system tray / notification area icon support.