Need help underclocking my Graphics card

[nyahnyah12]

I have a gateway p-7811fx laptop (nvidia geforce 9800M GTS graphics card), it constantly freezes whenever the graphics card is under any stress from practically any game, did a little reading and apparently the early model's graphics card was way overclocked right now its at

Core: 600 MHz
Shader: 1500 MHz
Memory: 800 MHz

and these are the recommended specs

Core: 400 MHz
Shader: 800 MHz
Memory: 300 MHz

Just wondering how i can change these values, i downloaded rivatuner and ATI tool but can't figure them out, I heard you can also do it from the BIOS, any advice would be greatly appreciated...

[BC_Programmer]

Rivatuner-

Start Rivatuner (duh )

you should have two frames- one captioned "Target adapter" and the lower one "Driver settings". Click the small down/right pointed arrow inside the lower combo box. Mine says "ForceWare detected" but I don't know if that's necessary.



A menu appears- click the first option, which is "hardware settings" you should be presented with a box similar to this:



check off the top option to enable the sliders, and lower them as you feel fit; make sure to check the 3d-settings as well, which can be accessed by changing the selected item in the upper right combobox.

[nyahnyah12]

I made the change then ran the ATI tool's 3d model and it said that the graphics card was still at 600, 1500, 800.  Does it not change the maximum MHz the graphics card will go to? Or perhaps I am saving it wrong...

[BC_Programmer]

at the desktop, the graphics cards 2-d settings are likely active- did you change those as well?

[nyahnyah12]

:Edit:

Fixed the problem by enabling constant performance level on performance 3D, thanks for the help.