Increase GPU Voltage?

[Vista_32bit]

Ok, so I overclocked my GTS 250

STOCK:
Core: 738MHz
Shader: 1836MHz
Memory: 2200MHz

OVERCLOCK:
Core: 806MHz
Shader: 2005MHz
Memory: 2502MHz

Should I increase the voltage on it? If so, how? And if not when will I need to if I keep overclocking. I am new to the voltage so detailed responses would be nice.

Thanks

 

[CyberZeus]

Hi, I have overcloccked my 8600 GTS successfully without increasing the voltage.
By the way, correct me if I'm wrong, but your overclock is not good because you lower memory speed...

 

[Vista_32bit]

Hi, I have overcloccked my 8600 GTS successfully without increasing the voltage.
By the way, correct me if I'm wrong, but your overclock is not good because you lower memory speed...

Oh, woops i forgot to double it (gddr3)

There we go, it's correct now.

 

[mattinahat]

There are bios backing tools on the web but I wouldn't recommend this method. I am pretty sure you can tweak voltages through EVGA Precision but I have never used it myself.

Overclocking a graphics card is futile IMHO. I have done it in the past and I find a higher CPU clock always increases game performance much, much more than overclocking a GPU.

Good luck though. :D