http://www.techpowerup.com/articles/overclocking/33Provides links to different video card overclocking utilities, as well as a guide on how to use coolbits to unlock the overclocking features of the nVIDIA drivers. Gives a guide on how to find The maximum video card overclock.
ATI overclocking tools:
Atitool
RIVATUNER
Rage3dtweak
Radeonator - Discontinued - Use Google To Find.
Powerstrip
Radlinker / RadClocker
Some ATI cards are protected against overclocking. If you change your overclock and you get no performance increase your card is probably locked. Test this by setting the clock speeds to values so high that your card would immediately crash on applying the new settings. If it's Still Running Your Bios Is overclock-Locked.
To remove the lock on the 9500 you have to flash a Hacked Bios Which You Can Get from
Here.
To Remove the Lock on the 9000/9200/9600 you have to use modified drivers which you can get from
Here.
See The Related Articles Section On The Bottom of this Page on how to flash a video.
NVIDIA overclocking:
Coolbits.Reg
You Will Also Need The Nvidia Detonatorxp Drivers, Use The Latest Stable Version.
................. ..
Double-Click The Coolbits.reg and You'll See A Window That Says, "Are you so you want to address? 中文
.
Click ok and reboot.
Now Right-Click The Desktop and SELECT "Properties" from the menu.
Select the "Settings" tab. A button labeled "Advanced" will appear. The "Clock Frequencies" tab is where the new core / memory speeds can be adjustedYou will not be able to apply the new settings without clicking the
"Test New Settings" button. Once the highest stable speeds are found you will need to check "Apply these settings at startup" so the video driver will automatically set the card to these speeds every time you boot into windows. If the higher speeds cause Problems Hold 'Ctrl' AS Windows Loads to Prevent Coolbits from Loading The overclocked settings.
Step-by-step guide to video card ocing
