How do i undervolt my GPU

Its a 9800M GT on a Clevo M860TU.

I would prefer detailed help, rep points for those who do

 

I dont think you can undervolt a GPU...only CPU

 

You can change the clocks with Rivatuner, but you can't change the voltages; at least, there's no way that I know of.

 

short answer is you can't
besides it would effect stability im sure even if you could

why would u want to undervolt it anyways? if its for cooling reasons, just downclock your core/memory/ a few notches.

 

You can do it using Nibitor....but it'll be hard with the 9800M GT, since it might not be recognized by the editor. You'll probably have to change the Device ID and all, but its like, more for advanced users.
It won't be worth it really, since you'll probably shave off 5*C or so.
If you're getting high load temps, active cooling will be a better option.

 

i dont see why nvidia and ati cant add liquid cooling for there high end line of graphics,would solve some problems

 

You have no clue how large the solution would be, do you?

 

i do, *l* I just dont understand why ATI or NVIDIA havent yet ,besides the cost issues of manufacturing 1000's of cards with it.

 

>.> for someone who has their laptop for sell, you really shouldn't be messing with things like this. Undervolting the gpu can be done, but it requires vbios flashing.

 

Liquid cooling is already available for almost any desktop graphics card, just need to apply a cooling block to it and run the I/O tubes to it. An integrated solution would be huge and probably ineffecient.

 

I don't think I would want a all water cooling system anyways, something more like a hybrid air/water cooling system could work. It could use air and heat pipes attached to a water block, and then have some kind of docking station for while you are at home that has quick release connections for water cooling. With several new kinds of cooling solutions coming in the next few years, water cooling in a laptop just seems silly.

 

I won't change anything unless I am unable to sell it.

 

water cooling isnt silly, gaming laptop manufacturing companies
should have already had this place 2 years ago ,but they havent, instead all you have is people taking apart there laptops and doing there own custom cooling,that isnt right if you ask me, it should have done years ago

again it doesnt have to be attached to a laptop,but more so a add'on type of way(keeping the portability aspect still) . just my thoughts

 

Yea Nibitor seems to be the only way but it supports the 9800M GTX and not the 9800M GT =/

 

Your right its not silly, it's moronic. There are several people who can't even update drivers or even know that they need to clean their laptops. As I said in my previous post there are already more efficient cooling options that will show up in the next year or two. You should have read my entire post, I already provided a perfect example on how it could be done properly.

 

Water cooling is immensely impractical for so many reasons

1. The size of the tubing needed
2. The energy needed to pump water
3. Where are you going to put a giant condenser than water cooling systems need?
4. The very real danger of a leak within the laptop. Given a laptop's size, its almost guarenteed to short circuit everything.

 

Water cooling is over rated. Its not really a viable option for notebooks

Try pouring water into the exhaust vent.

To OP, you can undervolt your gpu via nibitor, you will need to reflash the vBIOS though which isnt easy.

 

Ok I got a question about CPU undervolting.

Is there a way to get around the max undervolt limit set by RMclock? There is no option to underclock below a gap of 0.3V from the current voltage.

 

thats funny

on a serious note, you affect stability overclocking or underclocking for that matter on any CPU/GPU when manually adjusting it, everyone knows this

if you can counter balance it just right, you will find the sweet spot,but with overclocks,added heat always affects general performance

steady temperatures is key.desktop computers are easily controlled,laptops are not unless you take it apart and that isnt really a solution for alot.

 

I recommend against this especially when you're doing gaming. If you lower your GPU's voltage and it starts to have a hard time (i.e. when gaming), the GPU itself may just bail out on you.

 

+1 .this

lower voltage on the GPU may work out , if you never play games
soon as it heats up when playing games,boom. problems, leave it at stock.

 

I swear some one posted a thread about howhe undervolted his 8800m gtx in a m15x, cos it was running in the 90s range. search the alienware sub forum.

 

There is a way of getting the 9800M GT recognized as the 8800M GTX, probably by changing the Device ID. I remember reading it in the Clevo forum. (Try searching there)

Max UV limit, 0.3V ?
Anyway, if you want to unlock the VIDs, check out the "RMClock_Tweaks.reg" file (in Notepad). It has loads of tweaks in it, and its quite easy to figure out how to apply a single tweak.

 

ah ok i will try looking in the clevo forum. i know username 'skillz' has done it but he hasn't logged on to respond to my PM.

My stock voltages were 1.3125, it only let me choose voltages between 1.0125 and 1.3125. But I am currently at 1.0125 and could definitely go lower but it won't let me.

 

Did you select "Mobile" in the advanced CPU settings in RMClock ?

If yes, then you can try unlocking the VIDs, and see if RMClock actually lets you apply them. Usually the unlocked ones don't work, since RMClock automatically detects what all your CPU can handle.

And monitor the VIDs in either CPU-Z 1.41 or CoreTemp.

 

link1313 I did undervolt my old 8800m gtx, but I found using nibitor to just under clock the card more than usual while not gaming gave just as acceptable results. Undervolting the gpu for 3d mode was almost impossible, I actually started having artifacting because the card just couldn't run at any lower voltage. Some games ran ok, but world in conflict and crysis seemed to push the gpu just a little harder and had artifacting.

 

Ok I was able to unlock the VIDs through the RMClock_tweaks file. Now to see if they work.