GTX 460 does not dynamically undervolt with dual monitors **solved**

[darkswordsman17]

Heres something odd... My GTX 570 does this. Even if I use it with a 8800 gts for second monitor. But when I do a older 7600gs for the second monitor it drops down at normal. I think its partially due to driver, it doing this. Monitors are dif res too.

It does it even when you hook the second monitor to a different video card?

 

[XLer8]

It does it even when you hook the second monitor to a different video card?

Yeah the 8800 GTS, perhaps they share the same driver core. Its why I think it is a driver thing with nvidia. The 7600GS prolly has complete dif driver core. I could be wrong tho.

 

[notty22]

I was reading more about Nvidia inspector and there is a special tab to deal with dual monitor power states.
He mentions why Nvidia and AMD do what they do, and he has a work-around.
You right click on the 'show overclocking' tab and there is

Start multi-display power saver.


Saving energy when using multiple monitors
For NVIDIA graphics cards GDDR5 is use as video memory, there is a limitation in the power-saving features. If more than a single display with different resolutions/timings on the graphics card is connected, so the driver prevented that automatically downshift in energy-saving "performance States" (P-States).
The reason is memory, which may cause flickering when changing the P-States according to NVIDIA in a hardware limitation when using GDDR5. This problem is video cards thus also not limited to NVIDIA.
Unfortunately, the driver offers the user no choice to take the flicker in order to save power instead. A new feature dedicated to this fact is now "multi display power saver".

The driver is forced in the niedrigesten P-State to change. Now you can configure that may change as an exception in a higher P-State applications. A control based on the current usage is also possible.
This function takes a NVIDIA graphics card that has at least the three following P-States: p0, P8 and P12. The latest drivers are also provided.




Read about it here :
http://www.microsofttranslator.com/...//blog.orbmu2k.de/tools/nvidia-inspector-tool


http://www.microsofttranslator.com/...isplay-power-saving/multi-display-power-saver

 

[SickBeast]

notty22 you are a genius!!!

Thank you very much! nVidia inspector fixed the problem perfectly. Both of my GTX 460s are idling at 25C now with both monitors enabled, at different resolutions as well.

It even has an option to run at startup which is very convenient.

There is a slight flicker on the secondary display when you first turn it on, but it's barely noticeable and well worth it IMO.

 

[notty22]

notty22 you are a genius!!!

Thank you very much! nVidia inspector fixed the problem perfectly. Both of my GTX 460s are idling at 25C now with both monitors enabled, at different resolutions as well.

It even has an option to run at startup which is very convenient.

There is a slight flicker on the secondary display when you first turn it on, but it's barely noticeable and well worth it IMO.

LOL,
will have to bump this thread when other Nvidia users gripe about this issue.

 

[Magic Carpet]

Had exactly this issue solved now. Thanks Notty.