Need Voltage Tuning Software For A GTX 275

[ANTEC900]

I Got My GTX 275 Today And I Would Like To Change The Voltage
To Hopefully Get A Higher Overclock
But Can Only Find 3 Programs To Change It

Software Tried:
EVGA Voltage Tuner
This One: http://www.xtremesystems.org/forums/showthread.php?t=227628
And This One: http://www.xtremesystems.org/forums/showthread.php?t=217002

Can Some One Please Help Me Find A Program That Works

Edit: This Is The Card I Am Using http://www.newegg.com/Product/Product.aspx?Item=N82E16814127429

 

[ANTEC900]

I Found Out On Another Forum You Cant Be soft Modded To Up the Voltages

So What Can I Do To Change Voltage On It

 

[sneekypeet]

I tried using the EVGA tool on my EVGA GTX 275, just to find out to find out my card isn't equipped to be software volt modded. I think you may be stuck with a hard mod with potentiometers if that is also the case with yours.

BTW, I also failed at trying to get rivatuner to do it, because it isn't built into my card to be accessible.

 

[OnBoard]

No voltage control chips on the 55nm cards (cost saving thing). GT200 series don't really need more voltage to overclock, so it isn't an issue.

Though depends what the stock voltage on the card is, if it's 1.12V or more, it's enough for what the card is capable.