ThrottleStop how to remove Throttle flag

[unclewebb]

The PROCHOT box indicator compares all of the temperature sensors on the CPU package. Typically during a benchmark test, the hottest spot within the CPU package is usually coming from one of the cores. If you clear the check mark in the PROCHOT box before you start a test, it would be very rare that the PROCHOT box will be checked afterward if the hottest core was only hitting 74°C. Remember that it is up to you to clear this box before starting a test. The CPU retains this record of throttling even when ThrottleStop is not running. As soon as you start ThrottleStop, it will check the CPU to see if any throttling has occurred since you last booted up and it will show a check mark in the PROCHOT box if there was throttling. In Limit Reasons you can press the CORE, GPU, RING headings to clear throttling information out of the CPU. Some times, depending on your settings, even when idle, the CPU will immediately trigger and one or more of these boxes in Limit Reasons will light up in yellow.

I increased the value

When you say you increased the value, how high did you go? When I am testing, I set the current limits to the maximum possible. My goal is to eliminate any reasons for throttling.

Down grading the BIOS is the only way to get the under volting feature back. If you are not 100% comfortable doing this then do not do it.

Remember that disabling BD PROCHOT only blocks throttling signals that are generated outside of the CPU. For years, laptop manufacturers never used this type of throttling. Only recently some engineers thought it would be a good idea, before they realized that some external sensors are low quality and frequently crap out. Regardless of whether BD PROCHOT is checked or not in ThrottleStop, your CPU will still throttle if it ever gets too hot. Temperature related throttling is controlled by a separate PROCHOT signal that is generated inside the CPU. This signal cannot be blocked. I have seen BD PROCHOT cause way too much unnecessary throttling. If you decide to keep this checked, the only thing to be afraid of is your CPU dropping down to 0.4 GHz and your laptop being completely unusable. Is that what you paid for? A new laptop that runs slower than a 10+ year old laptop? Do yourself a favor and clear the BD PROCHOT box.

If you need some more advice, check the Log File option in ThrottleStop and then run a Cinebench R20 test. Before you start logging data, in the Options window, check the Add Limit Reasons to Log File option. When finished Cinebench testing, exit Cinebench and exit ThrottleStop so it can finalize your log file. Open up the ThrottleStop / Logs folder and attach your log file to your next post so I can have a look. Boxes flashing red only tells part of a story. A log file gives a much better picture of your CPUs overall performance.

 

[frddl]

Dear @unclewebb , sorry for late reply and thank you very much.

For both of the values I put the highest possible (in my case it is 255.75 for IccMax and 1023 for PP0 Current Limit). Boxes keep blinking so I am sharing the log file here as well.

Additionally, what I noticed about the laptop now is that it keeps sometimes going down to 0.40 for 10-15 seconds and gets higher again. Not sure if this is normal.

 

[unclewebb]

it keeps sometimes going down to 0.40 for 10-15 seconds

The log file you posted does not show any instances of your CPU going down to 0.40 GHz. If you cleared the BD PROCHOT box, you should not be seeing 0.40 GHz when there is a load on your CPU.

Your log file shows that your constant throttling is being caused by the PL2 turbo power limit. When your CPU is loaded and throttling, the POWER column mostly shows numbers in the 14.9 to 15.1 range. If you installed the RwDrv.sys file into your ThrottleStop folder and checked the FIVR - Disable and Lock Turbo Power Limits option, there is nothing more you can do to get beyond this 15 Watt limitation. Your computer has been locked down by Xiaomi to 15 Watts. I am not sure if the previous BIOS was also locked down like this. With the BIOS you have now, there is no way to get beyond this limit. With the previous BIOS, you might be able to go beyond this 15 Watt limit but there are no guarantees.

Try searching some Xiaomi specific forums about your laptop model. Other users have found a way to go back to the previous BIOS version. Doing that would at least solve the voltage control problem you are having and going back to the previous BIOS might unlock your turbo power limits.

 

[frddl]

I just found a way to go back to previous BIOS and unlock XTU. Trying that in a bit and will let you know about the results. I noticed the same 0.40 ghz a bit ago, opened ThrottleStop and checked Limits section. Seems weird to me because BD PROCHOT is not enabled but it appears in the Limits. Attaching the screenshot.

 

[unclewebb]

Seems weird to me because BD PROCHOT is not enabled but it appears in the Limits.

Your computer is sending BD PROCHOT throttling messages. That is what those yellow boxes in ThrottleStop are telling you. Using ThrottleStop to disable the BD PROCHOT signal path is telling the CPU to ignore those messages.

unlock XTU

Intel XTU does not have an option for you to disable the BD PROCHOT function.

I noticed the same 0.40 ghz

Did you notice this in ThrottleStop or some other monitoring software? Was there a load on your CPU? Why not turn the ThrottleStop Log File option on. It takes very little in terms of CPU resources to log your CPU with ThrottleStop. That way you will have a record of any throttling the next time this happens.

 

[Michael19264]

I need help. My laptop has the capability to exceed up to 48 watts but instantly goes down again. Is there a way to make it go back up to max performance once Its cool again? @unclewebb any help would be greatly appreciated. I have an acer Aspire E15 E5-576G-81GD.

As you can see in the rightmost image, its indeed powerful enough to go up to 45watts or above.

 

[unclewebb]

Why is Turbo Boost Short Power Max set to 17 and why is this not checked? Check that box, set it to 44 and see what happens. You are the second person within a couple of days with that exact same problem. Did you copy your power settings from a YouTube video or maybe Acer is setting those limits wrong in the BIOS.

Edit - My mistake. You are just posting the same stuff in multiple threads.

Some laptop models are completely locked down while others are left wide open. After you make that change, do some more testing. If you cannot get beyond this limit using ThrottleStop then there is nothing else you can do.

 

[Michael19264]

It seemed to improve but still goes back down after a few seconds. I'm pretty sure it might be locked. Better than before though

 

[Richo]

Hi,

Would really appreciate any help if possible @unclewebb.

I have a Dell XPS 15 - i7 8750H @ 2.2ghz.

Have noticed what seems like significant throttling lately, especially in games. When running CINEBENCH 20, the temperature jumps to 96, 97 degrees too.

I also don't have the install button next to the "Disable and Lock Turbo Power Limits" checkbox.

Appreciate any help! Thanks

 

[unclewebb]

Dell XPS 15 - i7 8750H

The Dell XPS 15 runs hot and has known throttling problems, especially when gaming. The heat from the Nvidia GPU, when it is active, overwhelms the system and sends CPU temps up to the throttling point. There is not much you can do about bad design other than run your CPU at speeds well below its rated speed to try and reduce overall heat.

The first thing to check is when your computer is idle. With no web browser open or anything else, what does ThrottleStop report for C0% on the main screen? That should show 0.5% or less.

http://imgur.com/Sjo8mtn

Some people have stuff constantly running in the background that really does not need to be running. If you have high idle C0%, check the Task Manager Details tab to find out what is running in the background and get rid of what you do not need. Things like Microsoft Telemetry need to be disabled.

I also don't have the install button next to the "Disable and Lock Turbo Power Limits" checkbox.

Is the RwDrv.sys file already installed in your ThrottleStop folder? That button disappears after that file is installed. You can download it from Mega again but I am pretty sure you already have it installed.

12.2 KB file on MEGA

mega.nz

After that file is installed, check the Disable and Lock box. Some Dell laptops use different throttling schemes so checking this box will probably not solve anything. It is still a good idea to install the above file and check this option just to make sure this throttling method is not being used.

When you undervolt the Intel GPU, usually you need to undervolt the iGPU Unslice equally or else this part of your under volt will not work. Undervolting the Intel GPU is not that important since you are using the Nvidia GPU when gaming. I would not undervolt the Intel GPU. Save this for later or never.

I need to see a ThrottleStop Log File. Before turning this feature on, go into the Options window and check, Add Limit Reasons to Log File and also check Nvidia GPU. On the main screen check the Log File option, go play a game for 15 minutes or so and then exit your game and exit ThrottleStop so it can finalize your log file. Look in the ThrottleStop / Logs folder and then attach your log file to your next post. This will provide a lot more information compared to any screenshots.

When gaming, some people reduce the Turbo Ratio Limits. This slows the CPU down so it produces less heat. Reducing CPU performance is not ideal but there is not much you can do when the entire chassis is overwhelmed with too much heat. Slowing the CPU down is a good thing to do when games are not overly CPU dependent.

Your undervolt for your cache looks OK. Try running Cinebench and try reducing only the CPU core voltage further. Some users have seen reduced heat and improved performance by setting these two voltages differently. An offset of -110 mV for the cache and maybe -200 mV for the core. Bump the core in -20 mV steps and see if there are any improvements while maintaining stability. Not sure why this works but it definitely does on some laptops with the 8750H and 9750H.

 

[Richo]

Thanks so much for the reply @unclewebb.

My C0% does seem to be high at idle with nothing specifically open, sitting at around 10-15%.

And you're right about the "Disable and Lock Turbo Power Limits", I already had the RwDrv.sys file in the folder, just didn't realise I didn't need the install button anymore.

Also, some likely obvious information, but I disabled Turbo just to keep the temperatures down, which worked and stopped throttling, but not sure if it's something I have to resort to.

I've attached the log file where throttling did occur.

Thanks again.

 

[unclewebb]

I thought idle CO% was high. That is why I mentioned it. Go to the Details tab in Task Manager. There has to be stuff running in the background that really does not need to be running. You can see from my screenshot that running Windows 10, including ThrottleStop, takes up hardly any CPU cycles. Useless background tasks will add unnecessary heat and can cause stutters while gaming.

I would not disable turbo. Your CPU reaches the thermal throttling temperature in the log file but only once. Look at ways to reduce heat without sacrificing turbo boost. You can even lower the turbo ratio limits slightly to keep the temps down without having to completely disable turbo boost.

Have you done some Cinebench testing yet with reduced CPU voltage?

 

[Richo]

Thanks @unclewebb.

I'll have to find some items to stop running in the background, although when checking, almost all have a CPU usage of 0, although I suppose that may change from time to time. I thought I saw in a previous post you wrote, there was a program used to eliminate some of these unnecessary processes? Do you happen to remember what it's called?

I have changed the CPU voltage in stages, now its at -200mV. There were gradual improvements to CINEBENCH, although still instant throttling and red icons for THERMAL and EDP OTHER in the Limit Reasons.

I've attached the log again for during CINEBENCH if that's useful.

Thanks.

 

[unclewebb]

O&O Shutup 10 might have been the free tool that I mentioned before.

O&O ShutUp10++ - O&O Software GmbH

www.oo-software.com

Use the Details tab in Task Manager. There is no way that ThrottleStop will report 10% to 12% in the C0 state with the Task Manager showing 99% idle. Something must be running on your computer. Find it. Click on the CPU heading in that window to organize your running tasks.

http://imgur.com/wtyyoP6

Not much you can do with constant thermal throttling. Apple made a fortune selling thin laptops that depend on thermal throttling because there is no room for an adequate heatsink and fan. I guess Dell decided to follow their business model. A CPU that is capable of running at 70W to 80W is too much for this chassis.

 

[BikeHelmet]

Have you tried dropping the Turbo Boost power limits? If it can't draw as much power, it won't turbo as high. Maybe try 35 or 45 watts or something, and see if it changes the turboing behaviour to be more acceptable? I have an older i7-6600U which can turbo two cores into the mid 3's off a 25w power limit with the IGPU going. With a more efficient manufacturing process and a slightly higher limit, you might still be able to get a reasonable 2-core turbo on that six-core CPU. Worth a shot, anyway?

I'm talking about the Turbo Long Power Max specifically. (Drop to 35w or 45w to control turboing and temperatures?) The short power max can stay up there, perhaps adjusting the duration downward. You still want web browsing and stuff as snappy as possible, after all.


I do computer tuneups all the time. For disabling background stuff, I would:
-Run Services.msc
Disable (If you don't use file sharing / networking): Distributed Link Tracking Client, Server, Webclient, MAYBE Windows Update. (If you don't want it running when you're gaming. Or get Sledgehammer if you HATE Microsoft updates.)

-Run CCleaner
CCleaner has annoying popups now, so I typically block all its EXE's in my firewall - and then disable the smart cleaning so it isn't running in the background. But it's an invaluable tool for enabling/disabling startup programs and removing junk. Seeing all version numbers in its uninstall list is also invaluable when scoping out updates for software.

-Run Autoruns
Disable anything where the file is missing. Be careful not to turn off too much. You can turn off some extras like WinRAR or Adobe explorer hooks, if they're slowing your OS (and right clicks) down and you don't want them - but be careful disabling Microsoft stuff or anything that you don't recognize.

-Run WinAeroTweaker
Turn off LiveTiles, disable any other Microsoft stuff that you don't want running. Not long ago Cortana was gobbling GB's of RAM and re-indexing stuff while games were up, while using 100% of one core. How they define an "idle" computer has since been improved, but with Microsoft I have found that the more disabled their apps are, the quicker a machine runs. If you're not using it, disable it. I also purge the start menu myself, and go with OpenShell. Although not an issue on modern SSD powered systems, the performance difference is night and day on older computers, or performance starved ones like ancient Netbooks. I have seen netbooks take 7 or 8 minutes to search out a control panel setting in Win10, while OpenShell can get there in about 20 seconds on such lowly hardware. Obviously on your laptop you wouldn't notice much of a difference, but it is lighter and searches quicker and more thoroughly, and is a more customizable start menu, so I give it thumbs up all around.

Shutup10 can finish off disabling some things that WinAero Tweaker misses. I like to disable Edge running in the background. I'm a background software minimalist. Only what I need and choose, none of that pushy Microsoft stuff gobbling my GBs!

And finally - make sure you have the latest Intel RST drivers for your Intel powered laptop. The latest driver for your computer depends on your CPU/chipset. In my case with an i7-6600U, it seems to be v17.7, but slighly older processors like the 4th gen max out on 14.8.16.1063 - but for yours it will be the very latest, as long as this is being read in 2020. Try different versions and find out. If it's the wrong one, go back a version. Some of the newer Intel graphics drivers also delivered significant improvements all around, although I doubt you need them since you have discreet graphics.

Hope that helps.

 

[musty_exp]

Hello all. I have a brand new acer swift 3 315-52g laptop with i5-8250u. I can't use any features of throttlestop except disabling turbo. I can't even use any stress test program. Because thermal throttling or a power throttling (I don't know which one) steps in when temperature reaches 70C and causing to decrease frequency to like 2.3ghz. Isn't it too early to throttle? In games, it reaches 75C, but haven't seen anything more than that level. Since all these reasons, when i start a stress test, cpu freq drops to 2.3ghz in 10 seconds with %100 throttle and 70C. It's like something prevent it to go above that 70C level. I'm not sure if it's thermal throttling or something like power throttling. Same laptop users didn't experience such a thing.
I'd appreciate any help.

 

[unclewebb]

I'd appreciate any help.

I would appreciate seeing some pictures. Try running Cinebench R20. Post a picture of ThrottleStop with Limit Reasons open while your CPU is throttling. If you do not know if your problem is temperature or power related, Limit Reasons will tell you.

https://www.maxon.net/en-us/products/cinebench-r20-overview/

Most throttling is power related. The 8250U has a 15W TDP rating. In some laptops, you cannot go beyond this power limit so CPU throttling is the result. It is not a good idea to buy a laptop with a low power CPU if gaming is important to you.

Post lots of ThrottleStop pictures of all of the windows, FIVR, TPL, etc. and maybe I can make some suggestions.

 

[musty_exp]

I would appreciate seeing some pictures. Try running Cinebench R20. Post a picture of ThrottleStop with Limit Reasons open while your CPU is throttling. If you do not know if your problem is temperature or power related, Limit Reasons will tell you.

I sent it to the Acer service to increase the RAM without harming warranty conditions. I'll be sharing pictures when i have it again. I actually preferred it for office works but i occasionally play some old games with decent graphic quality. Thanks a lot for your answer.

 

[musty_exp]

Here are my throttlestop limit results. cpu freq setttles in 2.3 after reaching 70C. Cinebench R20 multicore score is around 1100.

 

[musty_exp]

Any thoughts? I succeded to increase cinebench score by reducing voltage by -.050v. My cinebench r15 score is 503 now. PL still shows up, but a bit lately now. By the way, I'm open to any advice on how to set a certain frequency value like 2.5ghz. Throttlestop doesn't help on this.

 

[unclewebb]

@musty_exp - In the TPL window what are your turbo power limits set to? Your screenshot above shows that you have not tried checking the FIVR - Disable and Lock Turbo Power Limits feature. Try using that feature.

Are you undervolting the CPU core and CPU cache? Did you try undervolting the CPU core more than the cache?

Did you try increasing the PP0 Current Limit? If you need help, post a screenshot of the TPL window.

Post a screenshot of ThrottleStop with Limit Reasons open while the CPU is loaded with Cinebench.

 

[musty_exp]

Thank you @unclewebb for your suggestions. I fixed the freq in FIVR. I also increased the short turbo power max to 25. Decreasing the max turbo frequency to 2.9ghz. Powers were stable at around 24W, I didn't face any power limit throttling and cinebench score was increased to 600 with around 84C. I think i'm gonna fix it to 2.4 and give it a go when playing games. I undervolted both cpu core and cache. I think I kinda solved my problem but still curious about current limit. Decreasing it should decrease the power created, no?

 

[unclewebb]

Intel CPUs use a variety of limits, both power and current. These two overlap. If you reduce the current limit too low, you will see EDP OTHER throttling before you see PL1 or PL2 throttling.

Have fun making adjustments. Hopefully you can find the right combination. Computers should be simple but they are not.

 

[BikeHelmet]

@unclewebb I have a Core i7-6600U. It had 25w limits. I bumped it up and PL1/PL2 red throttling disappeared when running dual heavy benchmarks. (Ex: OCCT + a GPU bench or 4K YouTube)

However, Ring EDP Other continues to blink red during benchmarks. Occasionally it will also show up for Core, and once in a blue moon for GPU, but that's quite rare.

What would you recommend that I do to the PP0 current limit to try to eliminate this?

Cheers,

 

[unclewebb]

When you see PL1 in the Core column and EDP OTHER in the Ring column lighting up red at the same time, it is your long term turbo power limit causing this. Either increase that limit beyond 30W or be happy with the 30W performance you are getting out of a CPU that has a 15W TDP rating.

Product Specifications

quick reference guide including specifications, features, pricing, compatibility, design documentation, ordering codes, spec codes and more.

ark.intel.com

When the PP0 Current Limit is set to 0, that usually means that it is not being used. You can try setting this to 100 but I do not think it will make any difference. It is the Turbo Boost Long limit that is causing the throttling in the screenshot you posted.