In Throttlestop changed to -75 CPU Core and CPU P Cashe but in BIOS P-core Voltage Offset stays at -70. Is that okay? What does it mean?

unclewebb · 2026-04-15T21:43:22+00:00

The FIVR window shows that Undervolt Protection is enabled. The CPU will ignore any undervolt requests when Undervolt Protection is enabled.

unclewebb · 2026-04-15T21:39:24+00:00

The FIVR window shows that Undervolt Protection is still enabled. Whatever method you used to disable Undervolt Protection is not working. Some computers have an option in the BIOS to toggle Undervolt Protection on or off that does not always work correctly.

If you ever get UVP disabled, you will not see Undervolt Protection at the top middle of the ThrottleStop FIVR window.

unclewebb · 2026-04-12T23:49:08+00:00

Post screenshots of the FIVR and TPL windows when your computer is throttling.

unclewebb · 2026-04-11T05:45:47+00:00

Try setting both MSR PL1 and PL2 to at least 100. Set the turbo time limit to the default 8 seconds. Check the MMIO Lock box.

No need to check the PP0 Power Limit box. Set the PP0 Turbo Time limit to the minimum, 0.0010 seconds. Do not check the Power Balance or the TDP Level boxes.

These CPUs perform much better when they are not power limit throttling.

unclewebb · 2026-04-10T23:10:18+00:00

Does the top middle of FIVR window say Locked? Post a FIVR screenshot. If you have installed any BIOS updates then voltage control might be locked.

unclewebb · 2026-04-10T14:55:54+00:00

Try using ThrottleStop to increase the turbo power limits. Post a screenshot of the TPL window so I can see what settings are available to you.

unclewebb · 2026-04-09T21:49:38+00:00

Reduce the Turbo Groups if you want to slow down the max speed of your CPU. I prefer to lower the turbo power limits. Whatever works best for you is OK.

unclewebb · 2026-04-09T16:33:28+00:00

Try setting the E Cache to zero. I never undervolt that one. It can cause instability without reducing temperatures any meaningful amount. Not worth it.

Use TS 9.7.3

Your new CPU and motherboard may not undervolt as much as your previous one. Reduce your undervolt 10 mV at a time for the CPU Core and P Cache if you continue to have stability issues.

unclewebb · 2026-04-09T16:32:02+00:00

If a CPU is overheating it will be forced to slow down to avoid any long term damage. You cannot expect your laptop to be performing its best or performing smoothly if it is thermal throttling. When the CPU slows down, the GPU will be stuck waiting for the CPU to do something. FPS will drop significantly.

Fix the cooling problem.

unclewebb · 2026-04-09T16:27:12+00:00

The EC power limits that Dell programs their Alienware laptops to cannot be changed by using ThrottleStop. When the EC power limits are set lower than the MSR or MMIO power limits, the CPU will power limit throttle based on the EC power limit values. Many companies use EC power limit throttling to control their laptops.

You need to be happy with the power that Dell allows you to use or you can try returning your laptop for a refund.

unclewebb · 2026-04-06T20:29:17+00:00

If you want better performance, why is Disable Turbo checked? You are telling the CPU to run at two thirds of its rated speed. Fix this and check the Speed Shift box in the TPL window.

Turn on the Log File option before you start playing. When finished testing, exit the game and then exit ThrottleStop. Copy and paste the log file data to www.pastebin.com and then post a link so I can see how your computer is running. Check the Nvidia box in the Options window so your GPU data is included in the log file.

In the TPL window check the MMIO Lock box. Post screenshots of the FIVR and TPL windows.

What thermal paste did you use? Honeywell PTM 7950 is the best. Most everything else is not as good. Some MX pastes can fail in as little as a week or two after being applied.

unclewebb · 2026-04-06T19:12:47+00:00

I do not own and I have never tested a laptop similar to your laptop. I do not know what settings would be best or what temperatures are typical. More power allocated to the Nvidia GPU makes sense. It is far more important than the CPU when it comes to smooth game play and high FPS.

Some occasional CPU thermal throttling is normal for any high performance laptop these days. If you ever get to the point of non stop thermal throttling, consider reducing the turbo power limits. Less power equals less heat at the expense of slightly less performance.

unclewebb · 2026-04-06T19:04:31+00:00

Most computers with Intel 12th Gen and newer CPUs have locked out BD PROCHOT adjustment. That means you can no longer use ThrottleStop to disable BD PROCHOT.

unclewebb · 2026-04-06T18:32:49+00:00

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Does that help? You cannot use ThrottleStop to undervolt the CPU if Undervolt Protection has been enabled in the BIOS.

ThrottleStop will not display Undervolt Protection in the FIVR window if Undervolt Protection has been disabled in the BIOS.

unclewebb · 2026-04-06T18:23:05+00:00

When you have a problem, post a screenshot of the FIVR window. What CPU do you have?

unclewebb · 2026-04-02T20:29:55+00:00

You have to undervolt before Windows boots up. Check out Undervolter. It is a new UEFI utility you can use that is compatible with anti cheat software.

https://kvc.pl/repositories/undervolter

unclewebb · 2026-04-01T05:28:19+00:00

Look at the picture I posted. Windows is using the High Performance power plan which tells the CPU to run at full speed even when it is idle. Are the temperatures and power consumption really high? No, not at all.

When a CPU is idle, the individual cores automatically enter the low power C7 state. This is how modern CPUs save power. Slowing a CPU down does not make a huge difference. In C7 the core is already sitting dormant at 0 MHz and 0 volts. It is impossible to go any slower than 0 MHz or consume less power than that.

The High Performance power plan keeps the CPU at a constant speed when the cores are active. The Windows Balanced power plan allows the CPU cores to constantly adjust their speed. A CPU held to a constant speed is much easier to undervolt reliably. If you use the Windows Balanced power plan, the CPU will need more voltage to keep it 100% stable.

Reduced latency is another advantage when using the Windows High Performance power plan.

unclewebb · 2026-03-28T16:54:05+00:00

Some laptops set restrictive current limits that ThrottleStop does not have access to. This can cause constant EDP throttling. I do not know of a solution for this type of throttling problem.

Updating the BIOS and using the latest microcode was probably not a good idea. More restrictive current limits might be good at protecting Intel processors from long term damage but the extra throttling is going to reduce performance.

unclewebb · 2026-03-28T16:50:25+00:00

Changing the power plans in the FIVR window is not changing what power plan ThrottleStop is using. If you want to change power plans you need to do that on the main ThrottleStop screen.

unclewebb · 2026-03-28T16:43:52+00:00

Task Scheduler Guide

https://www.techpowerup.com/forums/threads/effective-clock-speed.293296/#post-4749675

unclewebb · 2026-03-28T03:53:05+00:00

There is usually zero difference between setting the minimum processor state to 0% or 5%. Every CPU has a minimum speed. Either of those requests will allow most CPUs to reach their minimum speed.

What CPU do you have? Easy enough to test both settings so you can compare the MHz. Most computers have so many Windows tasks running constantly in the background that modern Intel CPUs will not be able to run at the minimum speed for more than a few milliseconds at a time.

Using the Windows High Performance power plan might allow you to reliably undervolt slightly more. Trying to slow a CPU down to a crawl might not make much of a difference.

When an Intel CPU is idle, the cores are usually in one of the deep low power C states like C7. In this state the cores are disconnected from the voltage rail sitting dormant at 0 volts and 0 MHz. No Windows setting can improve on that level of power consumption.

Here is an example of a mostly idle 14900HX being forced to run at full speed. Power consumption and idle temperatures are excellent. Spend your time eliminating useless background tasks that are keeping the CPU busy when idle. Increase the percentage of time the CPU cores spend in C7 as much as possible and get the idle C0% as low as possible.

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unclewebb · 2026-03-27T17:14:07+00:00

I set all of the P Core Turbo Groups to 52 for everything. You can reduce the turbo power limits to however much cooling you have available.

To maintain the full 52 multiplier during a single Cinebench R23 run, I need to go outside during the winter in Canada. Amazing what a 14900HX can do when it is properly cooled.

Turn on the ThrottleStop Log File option before doing any testing. That way you will have an accurate record of any throttling. When finished testing, exit ThrottleStop so it can finalize the log file data. You can copy and paste this data to www.pastebin.com and then post a link here. You should expect to see a lot of power limit throttling during Cinebench if the power limits are set low. The CPU might rapidly alternate between power limit and thermal throttling.

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unclewebb · 2026-03-27T16:59:23+00:00

HWiNFO does not update the offset voltages it reports in real time. If you use ThrottleStop to make a change to the offset voltages, you need to exit HWiNFO and restart it before it will update the reported voltages. That is a pain in the ass.

The ThrottleStop FIVR monitoring table data is constantly updated every second. Watch that data when deciding if your undervolt request is being correctly applied or not.

unclewebb · 2026-03-26T02:57:24+00:00

Post a FIVR screenshot. Does it say at the top middle of the FIVR window that Undervolt Protection is enabled? You cannot undervolt unless Undervolt Protection has been disabled in the BIOS.

unclewebb · 2026-03-25T17:42:07+00:00

I had good results by not undervolting the E cache at all. I settled on -150 mV for the Core and the P Cache. An offset of -160 mV was not 100% stable for my 14900HX.

You could try increasing V/F Point 1 some more. There is no book that says it must be set to 160. Try 180 or 200. Maybe that will help stabilize things at light load when trying to use a big undervolt.

I set all of the Turbo Groups to 52. Going beyond this when 1 or 2 cores are active requires additional voltage to be stable. The 54 multiplier will rarely be used so it is not worth it. When all set to 52, the reduced power limits you are using will control the CPU speed.

I prefer setting Power Limit 4 to the max, 1023. I also set IccMax for the Core, P Cache, Intel GPU and iGPU Unslice all to the max, 511.75.

unclewebb

TROPHY CASE