Trying to underclock/undervolt my maxwell laptop gpu

So I have a clevo P771DM-G
With 980M nvidia 8 GB, Gysnc card

BIOS SAYS
GPU GM204-B
Rev A1
Bios version: 84.04.67.00.0E
Samsung memory
8 GB
Device ID 10DE - 1617 1558 7703
Schenker 1558

Tried to to find some bioses these are the ones I found but not sure if these help me in any way.
https://www.techpowerup.com/vgabios/167297/clevo-gtx980m-8192-141030
https://www.techpowerup.com/vgabios/166462/166462

So I try to undervolt but there are no options in MSI after burner for me at all everything locked.
I use nvidia inspector and put max underclocks -135 mhz gpu and memory.
My default clocks are: 1037 mhz gpu and 2506 mhz memory.
So after putting the max underclocks of -135 mhz gpu and -905 mhz memory. I get
987 mhz and 1598 mhz memory
But for my calculations it should be 902 gpu and 1601 memory.
So I don't know why it differs and I get higher GPU mostly..

I used GPU-Z to extract my bios and open with maxwell tweaker. I see like extremely alot values. but I do see the voltages. But it is not one voltage setting. and I wouldn't know what to safely edit.. It may end up not booting at al.. So I don't think im suppose to edit it like this.

It would be safer to edit via windows.

 

Can you decrease the power limit? Decreasing the power limit and raising the clock speed would be a way to undervolt.

 

In Nvidia inspector I see power and temperature target? if that is what you mean? 0 to 100%. But it is greyed out.
I don't know where the 'power limit" option would be. At any rate if it is in the Clevo bios. Then I don't have it since my bios has almost 0 options about anything...

 

Can anyone help please?

 

sorry

 

Why are you undervolting and underclocking in the first place? What's the problem?

 

Have you tried GPU tweak II? It works for me.

 

Thank you for taking the time to reply. I don't want to derail my topic by talking about that. Just know I need to underclock and undervolt. Do you have anything that might help me on that?

 

Do you have a maxwell mobile GPU? I just tried GPU TWEAK II.
I noticed a few things.
It doesn't allow me to declock my gpu at all
And for underclocking it allow allows me to underclock -38mv.. I tried to apply that, and it simply resets to default. Somehow I can't apply it?

 

Sounds like it may be a bios issue possibly. Next to doing something with coding, or using a lower wattage power supply, I am not sure.

 

If its heating up, teardown, clean and repaste, given that you have such a large chassis with decent cooling, thats what it might need.

Most Maxwell vBIOS are locked, you need an unlocked vBIOS to unlock access to power management and more range on the core clock control.
You might be able to use NvInspector to lock the core to a lower P state.
If its to extend battery life, no undervolt you gain you much, consider an external power bank made for laptops.

EDIT:
http://forum.notebookreview.com/threads/power-heat-problem-with-my-p771dm-g-laptop.832129/

Going by your previous thread, this sounds kinda like your VRM's are overheating due to improper thermal pad sizing/gaps.

 

Is it derailing to question if it's due to heat, and knowing that repasting would be the path of least resistance, and better for the health of the future of the laptop if so?

Software tweaks don't solve physical hardware issues, that's all.

Maxwell chips are too locked down for what you want to achieve. I used to have a GTX 980M, they are great at overclocking/volting, but it's a one way street.

 

I have seperate topics for seperate questions.
So you are saying there is no way to undervolt this chip?

 

Would you know a way to get this "unlocked vBios"?
How would you lock the core to a lower P state using NVinspector?

 

Its all related to the same problem, thats why you shouldn't make lots of topics when the underlying problem is the same.
Either Klemm on techinferno(use a VPN maybe if you cant make an account), or Prema.

About locking P-State, might not work on Maxwell, read this topic:
https://forums.guru3d.com/threads/how-to-force-lock-p-state.397347/

Its still seems like you need to replace the thermal pads on your CPU VRM's and maybe you GPU core is not that healthy if it keeps crashing, sounds more like some VRAM chip might be damaged.

 

@chrisssj3 Its better if you actually explain the problem you are having (if there is one) and why are you trying to underclock and undervolt the GPU.

As others have already explained, NV made it difficult to purely undervolt or underclock the GPU's from Maxwell onward because they tied the clocks and voltages together.
Plus, if the GPU bios is locked, you might be encountering even more issues. I understand its not impossible, just difficult.

Also, if the laptop functioned fine when you first got it (when it was brand new), then it stands to reason you could simply try opening up the machine and cleaning it from dust along with re-applying quality thermal paste to both CPU and GPU (and possibly quality thermal pads to the VRM's and GPU memory chips).

Plus, you might see into potentially undervolting the CPU as well (after trying to clean up and repaste the laptop).

 

Maxwell is difficult to undervolt and requires vBIOS modification. Pascal and Turing are very easy to undervolt using voltage/frequency curve editor in MSI Afterburner and similar software.

 

So there is no one able on this entire forum to undervolt a maxwell gpu? I understand it may not be easy. But usually there are some people around with know how?
I tried searching for a new bios, but all links are dead..

 

?are you also blind, why game if you are blind people want to know what the issue is?

 

Probably he want's more battery life while playing, at sacrifice of frame rate. I can't think any other logic reason.

 

People I don't understand why you are doing this, please don't de-rail my topic by trying to steer me somewhere else.
All I wish is a method to undervolt my GPU, wether by a bios edit of my own bios, an existing bios or some software that can do this.
My reasons are my own and quite irrevelant for my question,

 

The only person I can think of that can give you a final answer on this is @Prema

 

At this point in time, will he even be able to help?

 

get a modded vbios search google then use nvidia inspector to undervolt very easy to do and yes its possible.



the 980m will need voltage controls unlocked and for that you will need to get your hands on a Prema bios or ask svet over at MSI...infact you can ask in NBR head on over to the msi ask a rep page and try to ask around...svet might be able to help for a small donation

 

He talk about Maxwell graphics. In short, all mod vBios is made for increasing voltage.

 

yeah I realize that I did not see the 1080ti as that was not mentioned in the title....but he will need a modded vbios that much is known

 

Not really. Haven't you thought that there is a reason why you're having so hard time to find a vBIOS that suits your needs? What you are looking for is the equivalent to looking for an investment trading strategy that makes you lose money on purpose, you won't find any information about such a thing because is irrational behavior.

There is probably a better solution to the real problem you are trying to fix.

 

For some reason in nvidia inspector it won't allow me to undervolt, like in your picture. I suppose because your picture has modified bios? Though it seems like your card/bios cant get memory underclocked there.

 

Don't you think I have tried that? I've searched endlessly on google for an appropriate bios that might have the possibility of letting me do this. But nothing, and the few things I did were not alive.
So definitely NOT easy. You say this "Prema bios" will allow me to do it? I searched nowhere to be found.

This bios is the closest I have found.
https://www.techpowerup.com/vgabios/214971/214971
Same device id, but different Subsystem Id. Not sure if that matters? It needs to be a 100% match?
Also It seems this GPU has a G-Sync capable version and non G-sync version.
My card = G-Sync. But no bios mentions wether it is G-sync or not...

Also tried opening this bios with MaxwellBiosTweaker 1.36 but it gives me errors. So i dont think I can trust this bios.

 

One way of undervolting while keeping the same clocks has been discussed by @Khenglish in this thread - http://forum.notebookreview.com/threads/undervolting-980m-methods.833102/