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81 Posts

11-09-2019

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Re: P53 Performance Issues - Thermal/Power Throttling?

2019-12-11, 1:52 AM

 wrote:

When it comes to thermal throttling, I have noticed the fan curve is extremely inadequate when it comes to cooling the CPU (P73 Xeon 2276). Even when changing the BIOS performance settings to maximum. You would think Lenovo would give the "performance" setting more performance for those who do not mind the additional noise... One can only hope for a future update...


I agree. The Max Perf should be used for the Middle setting and Max Perf needs more fan speed.

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81 Posts

11-09-2019

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Re: GPU Throttling Mystery SOLVED!

2019-12-11, 2:19 AM

 wrote:

@nvsnow Hi! These are good news at last! You're giving hope to everyone here and we couldn't thank you enough. I'd like you to tell us a bit more about your settings and your method please, I'd like to replicate all what you've done and see if I can observe the same results.

a) Did you download your graphics driver directly from Nvidia's website?

b) How does your P53 behave when on Discrete Mode in BIOS?

c) Which lenovo softwares/drivers do you NOT recommend to download or install?

d) Could you check cpu and GPU temps while you run your benchmarks?

e) Do you have the "Airplane mode" setting available on your version of Vantage?

 

Thanks again!


Yes!

a) I used the original drivers at first, then downloaded the latest from Nvidia. They work fine as well.

 

b) Discrete mode worked as expected. Hybrid doesn't seem to compromise performance and you can save additional wattage.

 

c) Good question. Before this solution, I was wary of drivers and settings, but now performance is stable. As for monitoring Cpu/Gpu utils, I noticed that GPU-Z can take up 5+% of cpu in the background whereas HWiNFo only takes around 1%. Something to be aware of.

 

d) In Max Perf mode: CPU 95 C and GPU under 75 C. Fans around 2000+K RPM. Defnitely room for more improvement here in terms of fan speed.

 

e) Surprisingly, the battery threshold works the way I want... limit max charge. Before, this feature used to force battery mode to get to lower threshold. It was so bad and dumb.

 

 

 

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821 Posts

05-24-2018

CA

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Re: GPU Throttling Mystery SOLVED!

2019-12-11, 4:42 AM

Hi nvsnow, thanks for the hardwork and sharing. I have some questions:

 

1. Can't we just change the computer name from LAPTOP- to DESKTOP- without reinstalling Windows?

2. If we download Windows from MS page or install Windows from a boxed usb thumb drive, where do we get all the drivers for the P53 and also vintage? Is there a site that we can download all the required drivers (not in the Windows OS)?

3. Does your method work for all CPU-GPU-LCD screen configuration(s) or only certain configurations?

4. If we reinstall windows, do we have to be careful or risk deleteing some hidden partitions such as factory image or other hidden partitions?

 

Thanks

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27 Posts

10-05-2019

DK

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Re: GPU Throttling Mystery SOLVED!

2019-12-11, 7:41 AM

BIOS
Boot Display Device: USB Type-C
Graphic Device: Discrete Graphics (Hybrid gave me issues, and I need full RTX control in Windows - and had issues getting to the settings when the card was on/off based on application)

Intel SpeedStep
Mode for AC: Maximum Performance (I WISH it could switch based on application in Windows 10 - or if I start a specific application)
Adaptive Thermal
Scheme for AC: Maximum Performance

CPU Power Management: Enabled

TB3
Thunderbolt BIOS Assist Mode: Enabled
Security Level: No Security
Pre Boot Env Thunderbolt: Enabled

I dont use Vantage, but instead Lenovo System Update (but I plan on using Vantage Enterprise)

At no points have I experinced throttle due to the "APS" driver issue. But I had a ton of issues with my Thunderbolt 3 Workstation dock. And I did 3 Windows 10 re-installations (from MS source, not Lenovo) - also from reading this forum so I didn't end up with the issues mentioned at this forum.

I use the Nvidia driver 26.21.14.3140 and I dont see the "Lenovo APS" in device manager either.

I'm curious to why XTU don't keep my undervolting settings. I have to redo them every time Windows restarts. I also notice that it says battery settings "Balanced" in XTU settings. But I have the slider in Windows to  "Best Performance".
Also tried to add som APP-based-profiles, but I cant see any changes when launching the application. XtuService is running in the background.

 

Answer 4: I wouldnt be afraid of deleted every partition, otherwise your recovery partition might just stick with Lenovos bloated software. We all know a clean Windows 10 give the best performance.

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27 Posts

10-05-2019

DK

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Re: P53 Performance Issues - Thermal/Power Throttling?

2019-12-11, 7:43 AM
@ve2mrx I'm just confused why I see thermal throttle AFTER i undervoltage - and only power throttle with standard settings. Thought it would be the other way around.
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112 Posts

09-08-2019

US

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Re: P53 Performance Issues - Thermal/Power Throttling?

2019-12-11, 7:49 AM

Wednesday morning wild guess:

(a) lower voltage -> (b) lower temp (initially) -> (d) higher (longer, more potent, not necessarily more power draw) boost -> (e) higher temps (than one pre-undervolt) due to d. (f)-> thermal throttle -> (o) temps need to drop lower than thermal throttle trigger termp, hence sits at TT

 

 I have another concern howerver,

 

Is APS is really a cause here? ( software bug, incompatible sofware or bad config of sots) 

or

Is this a harware fault? (dead sonsors of sorts) which triggers chain of events leading to throttling?

 

If latter, how do we go about selling the unit when time comes? 

 

 

P73 6c Xeon, RTX 5000, 2TB NVMe Samsung x 2, 7.6TB 2.5 SATA Micron SSD, 64gb ECC ram
Prior: Razer Blade Pro, Variety of Mac Books (2001 - 2015)
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17 Posts

12-03-2019

DE

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Re: GPU Throttling Mystery SOLVED!

2019-12-11, 9:21 AM

The answer is: Reinstall Win10 - but not just any reinstall. Restoring the factory image OR downloading Lenovo's Media Recovery did not work for me. Instead,  downloading and installing Windows 10 from the Microsoft Site did the trick.

I am tempted to also re-install the whole windows from scratch, too. What about the windows license. It can't be read easily (if ever). Is it guaranteed to be "accessible", and will the new windows "find" it somewhere on/in the laptop?

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44 Posts

09-27-2019

IE

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Re: GPU Throttling Mystery SOLVED!

2019-12-11, 9:57 AM

Yeah the windows license is stored in the laptops bios, so after installation it will be activated automatically just make sure to download the correct version of windows you have the license for.

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821 Posts

05-24-2018

CA

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Re: P53 Performance Issues - Thermal/Power Throttling?

2019-12-11, 12:34 PM

What can we do about throttling under Linux?

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44 Posts

09-27-2019

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Re: P53 Performance Issues - Thermal/Power Throttling?

2019-12-11, 12:46 PM

I don't remember having throttling issues on Linux as the drivers that handle that are different I was actually getting better temps on Linux as it was not turbo boosting as heavly on CPU and GPU was always the same clock as windows because nvidia drivers. When I had my P53 I tested it on Manjaro and Fedora and I did not have any issue, except for other things like external display and sleep but that is a different story. 

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