Specifications

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If you are using AGP2X mode because AGP4X creates instability, make sure you also force AGP2X in
your computer's BIOS as well as using the drivers for maximum stability during bootup.
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You may need the VIA 4.03+ AGP drivers installed to use the above files.
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You may also need to read the 'I have a VIA chipset based motherboard and I can't get AGP2X or
AGP4X working. How can I fix it?' question.
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Q. What are these Simpsons related registry keys that I just found (Bart, Homer, Krusty &
Marge)?
They're all to do with the overclocking tab that is enabled in the NVIDIA control panel with Coolbits (see the
'How can I enable the overclocking utility in NVIDIA's drivers?' question for information on Coolbits). They
are stored in the
HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\Class\Display\0000
\NVIDIA\NVTweak\Hardware
registry key and are set when you first tick the 'Allow clock frequency adjustments' box in the NVIDIA control
panel and are asked to restart.
Marge sets whether the panel is enabled or not, and the rest are all to do with the actual values and ranges of the
overclocking sliders.
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Q. How can I manually set refresh rates and force the refresh rate above 60hz?
You should be able to adjust refresh rates for the current display resolution and colour depth using the Display
control panel under the 'Adaptor' settings. On most drivers 'Optimal' is the best setting, but some drivers do not
pick the optimal refresh rates correctly and set the refresh rate to 60hz. You can tell this because your display
will flicker. You can use the following tips to change all of the refresh rates easily:
(Note that under Windows 2000 there is a separate problem that means you cannot set your refresh rates above
75hz. See the 'I cannot set my refresh rate above 75hz under Windows 2000. How can I fix it?' question for
more information and fixes for the problem.)
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Make sure that you have the latest drivers installed for your monitor.
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For Windows 9x/ME, use hztool to adjust the rates manually to the ones you use. You can also set up
custom refresh rates with this tool. You can download hztool at the following page;
http://hem.spray.se/doxx/
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For Windows 2000, use the Windows 2000/XP NVidia Refresh Rate Fix program to adjust the rates
manually to the ones you use. You can download this tool here:
http://www.planetquake.com/ztn/nvreffix/
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For Direct3D games in Windows 2000, you can also run DXDiag, click on 'More Help', click 'Override...'
and type in your desired refresh rate.
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For Quake 3 Arena you can simply type the following commands at the console:
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/r_displayrefresh "x"
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/vid_restart
where x is the desired refresh rate (e.g. 75)
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GeForce FAQ