Overclock a Video Card

How to Overclock a Video Card(2)

For NVIDIA cards
1.Go to "Run" in the start menu.

2.Type in "regedit"and click OK.

3.Then, in the folder tree, go to HKEY_LOCAL_MACHINE, then SOFTWARE, then NVIDIA Corporation, then to Global, then finally NVTweak.

4.Right-click on a blank space in the right pane, and say New > DWORD Value.

5.Name it "Coolbits", and set a decimal value of 3.

6.Click OK, and exit the Registry Editor.

7.Right click on a blank area of desktop, and go to NVIDIA Display, then the name that shows up in the submenu.

8.Go to Clock Frequency Settings, and click Manual Overclocking.

9.In the Standard (2D) menu, go to Performance (3D), read the agreement, and click Detect Optimal Frequencies. Give it some time, and once it's done, click Test Changes.

10.The testing can reset a few settings, so change your settings back to what they were. (apart from the clock settings)

11.Click OK, fire up a game, and notice the difference.

Warnings
1.Never overclock if your video card doesn't have a fan on it, you may damage your GPU.

2.Never overclock too much; it may damage your system.

3.Note that this method voids your video card's warranty and may damage your video card if you go overboard with it.

4.If you can't follow any part of the NVIDIA bit, stop. It is more complicated than the ATI one.

the article source:http://www.wikihow.com/Overclock-a-Video-Card