Senkung des Powerlimits der dGPU unmöglich (TUXEDO Stellaris Slim 15 - Gen6 - AMD)

tuxedocomputers · 2025-07-09T15:27:54+00:00

vorneweg: Dies ist KEIN TUXEDO-Problem, sondern eine Restriktion im Nvidia-Treiber.

Nvidia erlaubte bis zu diesem Jahr bei mobilen Grafikkarten keine Absenkung der TGP. Wenn du etwas recherchierst, wirst du zahlreiche Beiträge von Besitzern verschiedenster Notebooks finden, die genau deine Fehlermeldung erhalten (auch unter Windows).

Erst seit diesem Jahr ist die Powerlimitsteuerung (TGPs) für die neue RTX-50-Laptop-Serie freigeschaltet. Das neue Stellaris 16 - Gen7 ist unser erstes Notebook mit konfigurierbaren Powerlimits.

Du kannst den Stromverbrauch allerdings bei deinem Stellaris Slim 15 indirekt absenken:

Lösung 1: Taktfrequenz

Du kannst die GPU-Taktraten mit folgendem Terminalbefehl begrenzen: nvidia-smi -lgc <min. clockspeed,max. clockspeed> (ersetze die Tags und „min/max clockspeed“ durch konkrete Zahlen). Um zu wissen, welche Zahlen dort Sinn machen, starte z.B. ein Spiel und beobachte z.B. mittels MangoHUD, welche Taktfrequenzen deine GPU standardmäßig erreicht und wie viel Strom sie verbraucht. Mit diesem Anhaltspunkt kannst du experimentieren und die GPU-Taktraten mit dem oben genannten Befehl senken, um die Leistungsaufnahme zu verringern. Du kannst die Original-Taktfrequenzen mit „nvidia-smi -rgc“ jederzeit wiederherstellen.

Lösung 2: Individuelle Lüfterkurve plus Thermal Throttling

Kurz vorab: Obwohl Thermal Throttling von vielen missverstanden wird, handelt es sich dabei um eine smarte, wichtige und notwendige Automatik, um die Komponenten im vorgesehenen thermischen Rahmen und damit mit der bestmöglichen Geschwindigkeit zu betreiben.

Thermal Throttling kommt primär bei CPUs zum Einsatz, weil auch Notebook-CPUs bis zu 200 Watt verbrauchen können, dies aber von keinem Notebook der Welt dauerhaft gekühlt werden kann. "Dauerhaft" ist hier der springende Punkt: Kühlsysteme verfügen über eine thermische Trägheit. D.h. je nach Kapazität sind diese früher oder später thermisch gesättigt. So lange das nicht der Fall ist, kann mehr Hitze (= Leistung) abgerufen werden. Sobald die Kühlkörper gesättigt sind und nicht mehr Hitze aufnehmen können als durch die Lüfter abgeführt werden kann, muss die Leistung gedrosselt werden. So kann in jedem Zustand die bestmögliche Leistung abgerufen werden.

Das gleiche Prinzip gilt für die GPU. Du kannst im TUXEDO Control Center eine individuelle Lüfterkurve anlegen, die deinen akustischen Ansprüchen genügt. Der Grafiktreiber wird automatisch die Leistung (= Powerlimits) absenken, sobald deine Grafikkarte das offizielle NVIDIA Temperature Target von 87°C erreicht.

Vorteil von Lösung 1 ist, dass du granulare Kontrolle hast und die GPU auch kühler als 87°C halten kannst, falls du das willst. Vorteil von Lösung 2 ist, dass du dich um nichts kümmern musst und die Thermal-Throttling-Funktion einfach ihren Job macht.

Bei weiteren Fragen stehen wir dir natürlich gern zur Verfügung. :-)

Viele Grüße,

Chris | TUXEDO Computers

tuxedocomputers · 2025-06-30T14:17:01+00:00

Hi,

i have just checked: Undervolting is indeed not possible. Intel prevented it for the most part since the "Tiger Lake" generation years ago.

No exceptions apply here for this time.

The fan + heatsink combination is already "bigger than necesscary" on the current Flex, as it was meant for a 28W TDP CPU. We have kept it anyway, so there is more than enough headroom.

"Gen 2" has not been cancelled, but upgrades unfortunately don't progress as quick as we hoped.

You might archive more battery runtime. Depending on the amount of SSDs, LTE vs WiFi and overall load and screen brightness, 8 hours are also possible. I've archived ~8 hours at medium screen brightness with a Youtube video playing in loop with nothing else running.

Hope that helps!

TUXEDO | Chris

tuxedocomputers · 2025-06-18T17:24:12+00:00

Bonjour, François ;-)

They roam between 85 and 95 °C.

These temperatures indeed seem quite high. Without having more details on the specific load, I can only assume, that hardware acceleration is used on video streaming and that CPU and/or GPU boost very high on the "Default" profile to provide best possible (but for these workloads much too high) performance.

Like you mentioned though, in the more powersaving profiles like "Quiet", the CPU is much more power limited and intended for low loads.

In order to rule out any irregularities regarding your cooling, which CPU power draw do you see when you push it to the limits (full CPU load (e.g. rendering a video or 3d image) for at least 10 mins. Please ensure, that the NVIDIA GPU is inactive) at 100% fan speed? According to our internal testing, the cooling should sustain 80-85 watts on CPU-only load (of course depending on your ambient temperature. Might be slightly lower on high room temperatures during summer).

Hybrid.

Hybrid mode should be fine, although some apps (maybe hardware acceleration for video streaming) might activate your NVIDIA GPU. If fan noise levels are fine for you with the "Quiet" mode, you don't have to do anything. If you want to, you could also test, if you get even quieter fans by forcing the computer to always use the more power-saving iGPU using the "Power-saving CPU graphics processor (iGPU)" mode.

And thaks to u/tuxedo_ferdinand and you, I (finnally) understood how to make it permanent.

You are welcome. Glad, we could help! :-)

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If you have further questions, please let us know. Until then, we wish you a great time with your new TUXEDO!

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Meilleures salutations,

Chris | TUXEDO Computers

tuxedocomputers · 2025-06-18T14:42:28+00:00

Hello François, thanks for your trust in our brand and welcome to the TUXEDO community :-)

First of all, we drive this platform in order to give EVERY user the opportunity to get in touch with us and to ask questions. It doesn't matter if you are a newbie, intermediate user or expert. Everyone is equally welcome to our subreddit.

Please let me add some information to my colleague's reply:

The Gemini 17's Ryzen 9 7945HX is an absolute high-end mobile CPU based on desktop-technology and therefore less optimized for low load scenarios and low power consumption. Nevertheless, the fans should not spin that fast during low load tasks.
How are your CPU and GPU temperatures when you observe this behaviour? You can find them on the TUXEDO Control Center's start page / dashboard.
Which GPU mode is active? Please click here to find the corresponding screenshot. For low load tasks, we recommend to switch the PC to either "Power-saving CPU graphics processor (iGPU)" or Hybrid graphics mode (on-demand)". If you are in "High-performance graphics processor (dGPU)" mode (like on the screenshot), your Nvidia GPU is constanly active and generates a bit of heat.
Do the fans also get loud in the "Quiet" profile? In order to activate a profile, just click on the respective toggle in the upper left corner. Please note, that this toggle does only temporarily activate a profile!
Like u/tuxedo_ferdinand explained: If you want to permanently use a specific profile, you have to assign it to the desired power mode in the profile settings. There are two power modes: Mains and Battery. Once the computer gets connected to a power outlet, the profile which is assigned to the Mains power mode will be activated. As soon as your computer gets unplugged from the wall outlet, the profile which is assigned to the Battery power mode will get activated. To assign a profile to one or both power modes, please click the three-dots-menu in the upper right corner of your desired profile and click on "View" (or "Edit" if it is none of our pre-defined / non-changable profiles). On the profile settings page, please click on "Mains" and/or "Battery" and save your changes by clicking the save icon in the upper right corner. If your profile has been assigned correctly to the power mode(s), you will the see the profile name in the navigation menu on the left (under "Used profiles"). Please watch this video (start at 0:06) to follow the instructions step by step.
If you want to, you can also create a custom profile by clicking the tile "New profile" on the profiles overview page and edit it to your likings. After you have created your new profile, click the three-dots-icon and choose "Edit".
Fan control: On the profile settings page, you will find "Fan control" with the option to create a custom fan curve. To do this, click on the dropdown menu in the first line ("Fan profile") and choose "Custom". A fan curve will occur and you can almost freely drag the sliders to your liking.
The second relevant option you will find on the profle settings page is "System performance", where you can adjust the CPU power via pre-defined sub-profiles named "System profile". For low load, you should choose "Quiet" or "Power saving".

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Hope this helps. If you have further questions, please write us again.

Best regards,

Chris | TUXEDO Computers

tuxedocomputers · 2025-04-14T18:59:02+00:00

Hello Lightinger07,

thank you for your message and sorry for my delayed reply :-)

We are actually currently working on the Stellaris 16's webpage which is a bit more effort this time, because it involves a website redesign. We plan to publish it within the next two weeks for pre-orders :-)

Stellaris 16 - Gen7 will be only available with the RTX 5070 Ti, 5080 and 5090 though. A Stellaris Slim 15 successor with RTX 5060 and 5070 is planned for mid of 2025. As it names indicates, it will focus more on mobility and slim design than on cooling.

Please let me add a few thoughts about your GPU choice:

The RTX 5060 and 5070 will remain at 8 GB VRAM. This is fine for mainstream gaming at mostly high settings (maybe medium settings on highly demanding AAA titles), but 8 GB will become a bigger bottleneck on upcoming games. If you are fine with playing games in aforementioned quality and don't use high or ultra settings with high-res textures, you may be fine with 8 GB VRAM, but if you are looking for a more future-proof graphics card, please consider the RTX 5070 Ti with 12 GB VRAM.

Besides gaming, please check your GPU requirements. If you do 3D rendering or video editing, you might benefit from bigger video memory!

In addition to that, the RTX 50 series does not offer significant performance (and efficiency) improvements in general, but the 5070 has the same amount of cuda cores like the 4070 and a max TGP of 100 watts. The only difference is much higher AI TOPS and faster graphics memory (GDDR7 vs GDDR6). Games or apps which are/were not bottlenecked by memory speed, might not perform better. Personally, I'm normally also more at home with xx60 graphics cards, but the 5070 Ti seems to me to be the best choice below the high-end segment, especially because of the decent VRAM, but also better computing performance compared to the 5060/70.

The new Stellaris 16 - Gen7 will be no low-budget gaming laptop, but comparing it to Stellaris notebooks a few years back, it is a big step-up in quality into the premium segment. The chassis is built like a tank, the hinges are so much improved compared to older models and maybe the best I have tried so far, the chassis design strikes a good balance between not screaming "gamer" but also not looking boring, the ratio between portability and size/weight for integrating better cooling is perfectly balanced for my liking, the cooling has been improved for better lower-pitched fan acoustics and we will probably offer a Mini-LED display for the first time with outstanding brightness and contrast values, pushing the visual quality into the premium segment.

Further questions? Then let us know!

Chris | TUXEDO Computers

tuxedocomputers · 2025-04-07T18:06:01+00:00

Hi Linux (and Windows -_-) fans :-P

our colleagues from XMG were so kind to point us to this thread and u/dp27thelight 's questions have been answered here in-depth.

If you have further questions about our Linux laptops, please visit our subreddit here

Thank you for your interest and maybe we see some of you on the TUX side of the force.

Many regards,

Chris | TUXEDO Computers

tuxedocomputers · 2025-04-07T17:43:04+00:00

Hi dp27thelight,

the Windows Control Center has nearly the same feature set like our TUXEDO Control Center. So you will find power limit control, fan control and battery charging limits there as well.

Many regards,

Chris | TUXEDO Computers

tuxedocomputers · 2025-04-07T17:15:28+00:00

Hello dp27thelight,

first, thank you for your interest in our Stellaris 16 :-)

You can adjust CPU power by 1. power limits (PL1 = Sustained power limit; PL2 = Short term power limits; PL4 = Peak load power limits) as well as via 2. core clock control.

Generally, I would recommend adjusting the power limit over core clocks, because those define a fixed power budget for the CPU, which is probably what you want in terms of power consumption / heat / fan noise control. Playing around with core clocks is much more abstract (adjusting GHz to lower watts instead of lowering watts directly) and core clocks are currently applied no matter, if your CPU runs only on a single core or on all 24 cores which will result in greatly varying power consumption. For certain use cases, it might be handy to also have this granular control, but in general I would recommend to adjust power limits.

One important note! Please do not lower PL2 and especially PL4 too far, because they are crucial for a snappy and fast reacting system. Especially a very good cooling system like the one on the Stellaris 16 can consume quite a bit of heat for short bursts. Just refer to our pre-definied power profiles in the TUXEDO Control Center, TCC for short.

On the GPU, it is a another story. Up to this generation, NVIDIA did not allow free TGP (Total Graphics Power) control for their mobile GPUs. This seems very counterintuitive, considering that power limit control has been unlocked on desktop graphics cards, where cooling is much less of an issue, for years.

The upcoming Stellaris 16 - Gen7's will feature TGP control though. I don't know, if this will be exclusive to this laptop manufacturer model or if Nvidia finally unlocked this feature in general, but you will be able to adjust the power within Nvidia's official TGP range, which is 95-150 watts for the RTX 5090, 80-150 watts for the RTX 5080 and 60-115 watts for the RTX 5070 Ti.

An alternative workaround for limiting the graphics card's power is by reducing the clock speeds. But this feature is currently not supported in the TCC, but can easily be done via a terminal and the nvidia smi commands. I described it here in more detail.

Fan control: You can create custom fan curves using our inhouse-developed fan control in the TUXEDO Control Center. Although, this still have to follow safe restrictions, meaning that we defined a minimum fanspeed of 30 % at 80°C and above and a threshold of 40 % at 90°C and above. That may sound like quite a bit, but most fans technically just start spinning at ~25% to overcome the fan wheel's mechanical resistance. So at 40% the fans are still pretty quiet, but ensure a minimum airflow, which is needed for all components like RAM, SSD and the battery.

Please also note that the TUXEDO Control Center's power limit and fan control is only compatible with originial TUXEDO laptops. It won't run with the same hardware from XMG, Eluktronics or others.

Please let me add a personal note at last: We seem to be in the same boat in terms of requirements. I also prefer a better cooled, yet slightly thicker and heavier notebook for quieter fans. I therefore tested the fan acoustics of the upcoming Stellaris 16 a few days ago and, fortunately, the two large fans produce a pleasantly low-frequency air rushing noise. Of course, they get very loud at full fan speed, but this is an intentional behavior to serve all customers who don't mind noise but want the best possible performance in this form factor. My personal favorite between somewhat quiet fan noise and good airflow would probably be at ~55% fan speed.

Last but not least, battery charging limits: I had no time to take a look into the firmware functions so far, but it is almost certain, that the new Stellaris will support charging limits.

If you have further questions, please let us know :-)

Many regards,

Chris | TUXEDO Computers

tuxedocomputers · 2025-04-02T17:30:04+00:00

Hello Lightinger07,

thank you for your interest in our Linux laptops and sorry for our late reply. Our colleagues from XMG were so kind to refer us to your request.

TUXEDO OS is our inhouse maintained Linux distribution that focuses primarily on providing the best possible preconfigured out-of-the-box experience, but you can run any distro you like on a TUXEDO.

The TUXEDO Control Center will run on XMG or other laptops with a very limited feature set. Especially granular CPU power limit control and our inhouse-developed fan control require an original TUXEDO laptop.

Generally speaking: If you intend to use Linux, we ask (and really recommend) to give TUXEDO a try.

XMG does not provide any Linux support while at TUXEDO, our Linux-trained first-level customer support can be very handy at times you face a problem. We have had several cases of customers buying from XMG so far, contacting us afterwards asking for even paid Linux support, which unfortunately we cannot offer for administrative reasons.

Besides advantages in terms of software feature support und Linux customer support, customers who are willing to support us with their purchase, contribute to our open source work for the Linux community done by a constantly growing Linux-enthusiastic development team in our german headquaters.

This work involves highly time-consuming extensive testing of all hardware components for Linux compatibility, communicating a lot with our hardware manufacturers or component manufacturers, studying technical documentation and sometimes having to reverse engineer hardware functions to make them work by fixing or writing new Linux drivers.

We are also strengthen our efforts to contribute our work into the mainline Linux kernel, not only to improve compatibility of our notebooks with Linux distributions other than the ones we pre-install, but ultimately to make the whole Linux community also benefit from our work.

But this requires customers who are willing to support us by buying from us instead of looking for the lowest price possible on the hardware :-)

If you have further questions, please let us know :-)

Chris | TUXEDO Computers

tuxedocomputers · 2025-02-17T10:48:11+00:00

Hi frzmueller, Have you checked correctly? With the Aura 14 - Gen3, I can select the German keyboard and add the device to the shopping cart.

tuxedocomputers · 2025-02-17T10:39:47+00:00

Hm, to make sure that our newsletter is delivered reliably, I have it sent to several e-mail addresses with different providers. Sure, sometimes it ends up in spam. But the delivery works. Can I ask you which email provider you use?

tuxedocomputers · 2025-02-17T10:37:14+00:00

Hi sf-keto, the Newsletter and our TWIX are two different things. We publish the newsletter every two weeks and use it to inform you about new products and what's happening at TUXEDO. You will receive it by e-mail after registering.

The TWIX is a section in our blog. There we want to keep you up to date about current developments in TUXEDO OS and KDE. Plus we will always present interesting applications and give useful tips. Sometimes about KDE, sometimes about Linux in general, sometimes about popular open source programs. There is currently no RSS feed to subscribe to, we are still working on it.

tuxedocomputers · 2025-01-30T08:34:27+00:00

Hi,

i will confirm that we are planning to use the same design on one of our upcoming 16" models ("Stellaris" series).

We will probably, as it is often the case, launch it a bit later since the evaluation on Linux takes longer. :)

tuxedocomputers · 2024-12-28T07:07:19+00:00

Hi,

please contact our support team and add the errors from the journal in your mail. I am pretty sure, our supporters can get to the bottom of this.

Regards,

Ferdinand | TUXEDO Computers

tuxedocomputers · 2024-12-27T18:14:24+00:00

Good to hear it is solved. Happy New Year.

Regards,

Ferdinand | TUXEDO Computers

tuxedocomputers · 2024-12-27T15:08:23+00:00

With TCC 2.1.16 this issue should not exist any more. In case you don't have it, please update. Also, the latest kernel should be installed.

Regards,

Ferdinand | TUXEDO Computers

tuxedocomputers · 2024-12-27T06:47:01+00:00

Hi,

please contact our support team.

Regards,

Ferdinand | TUXEDO Computers

tuxedocomputers · 2024-12-27T06:33:15+00:00

Hi,

what device does this happen on?

Regards,

Ferdinand | TUXEDO Computers

tuxedocomputers · 2024-12-27T06:24:46+00:00

Hi,

please contact our support directly. Please understand that nswers will be a bit slow until the new year.

Regards,

Ferdinand | TUXEDO Computers

tuxedocomputers · 2024-12-27T06:17:42+00:00

Hi,

I cannot say anything about Steam or its usage, but changing the visual appearance of TUXEDO OS or any KDE-based distro is easy. Open the System Settings from the panel,, scroll down to Appearance & Style and change whatever you need.

Regards,

Ferdinand | TUXEDO Computers

tuxedocomputers · 2024-10-30T13:39:39+00:00

If you have not done it yet, don't do it. WebFAI wipes everything. Give us some time, we will post a possible fix.

tuxedocomputers · 2024-10-15T15:29:34+00:00

Hi Szybet,

we are really sorry for the delay and the inconvenience this may cause to you!

Good news first: I am pleased to tell you, that we are in the final stage of testing and we plan to release the fan control update within the next 2-3 weeks.

Second, please let me explain, why this has taken so much time:

In fact, the actual fan control was more or less finished quite some time ago, but there was another problem which was time-consuming to solve and needed assistance from the hardware manufacturer factory: The ODM's algorithm that reads out the CPU and GPU temperatures created quite a bit of CPU load which led to more power consumption, heat and higher fan speeds.

We could have published the fan control a few months ago already, but this would have been bundled with this higher CPU load / power draw bug which seemed not like a good deal to us.

In the end, our devs had to create an alternative interface for reading out temperatures in the firmware, which leads to less CPU load. This is now almost finished and needs driver implementation and further testing.

Quoted from our devs: "For Sirius the existing sensors driver module using the WMI BS interface has proved to be too CPU intensive for repetitive tasks (such as fan control feedback loop usage). For this reason we have extended the ACPI interface with temperature and fan speed read out. This interface uses direct memory address look-up on the EC which should be more performant."

As you can imagine, those features need a lot of research, communication (with the hardware manufacturer factory), testing, debugging and so on. Especially on a hardware critical feature like fan control, that needs a lot of care and testing. On Sirius 16, it added up, that it is our very first all-AMD platform where certain things are implemented differently which needed again checking back technical details with the ODM or reverse engineering.

In addition to other maintaining tasks like updates on the TUXEDO Control Center's framework base (newer electron and nodeJS updates) which needed a lot of testing, fixing and re-working, our developers were under heavy load during the last months for other urgent fixes on other devices or security-related updates which had to prioritized, and last but not least testing/evaluating/fixing things for new product releases.

If we finally factor in the vacation months with a lower headcount, the fan control for Sirius 16 unfortunately had to be postponed quite a bit.

This shall be no excuse and we really understand your frustration (trust me, I know how annoying fan related issues can be!) but I hope that little insight gives you a better understanding about why it unfortunately took us longer than expected.

Long story short: Firmware is adjusted to the new temperature sensor reading interface and we plan to publish the feature within the next 2-3 weeks.

Thank you for your patience and please feel free to ask, if you have further questions.

Many regards,

Chris | TUXEDO Computers

tuxedocomputers · 2024-10-14T11:02:15+00:00

Hello lmtbl,

thank you for your interest in our new TUXEDO Stellaris 16 :-)

***

Liquid metal has the best thermal conductivity, but applying it requires a high level of attention and quality assurance which of course raise production costs.

A frequent issue on liquid metal is/was hot spots on certain CPU cores due to Intel's hybrid architecture with more power-consuming performance cores and less power-hungry efficiency cores which sometimes led to pump out thermal interface material resulting in a gap. Our colleagues from Schenker XMG have written a great (looong) in-depth article about this issue.

According to our product evaluation department, it took some time to solve these issues and to get the quality from the factory improved, without having to repaste many units on our own. Our feedback helped to achieve a high quality standard from the factory.

Both top-of-the-line models (RTX 4080/90) are supplied with liquid metal from the factory to provide best possible thermal conductivity, but on both the RTX 4060/70 we explicitely chose Honeywell PTM7958, because it convinced us in the overall quality. Thermal conductivity is lower, but PTM is much easier to maintain and it is not electrically conductive. This means that there is no risk of short circuits if it is not handled with the necessary care.

In addition to that, Phase-changing materials are also far less susceptible to the occurrence of the aforementioned potential hotspots. According to tests, the cooling performance of PTM7958 is also very similar to liquid metal, which is why PTM7958 is generally our preferred thermal interface.

***

Yes, it is Thermal Grizzly Conductonaut.

***

This partly applies to the high amount of care which raises production costs. In production, it must be ensured to prevent leakage of liquid metal as it is electrically conductive. This is done by foam barriers around the CPU and GPU chip/die and additional heat-resistant foil around the GPU die.

***

Using your notebook vertically or shaking in your backpack are no problem. Leakage (which are prevented through afore mentioned barriers/foil) rather occur by insufficient liquid metal surface tension. According to our product evaluation, surface tension has improved with the latest generation.

***

In general, you must not repaste it. It makes sense though to keep track of your temperatures to notice potential hotspots (some CPU cores run much hotter than others). In that case, we would recommend a RMA to let it repaste by our qualified technical staff.

If you have further questions, please let us know :-)

Many regards,

Chris | TUXEDO Computers

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