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Need help soft vold modding a Gigabyte GTX 260, having trouble with it

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New Member
Nov 5, 2009
Greetings. I have a GIGABYTE GV-N26SO-896I GeForce GTX 260.
Link on newegg: http://www.newegg.com/Product/Product.aspx?Item=N82E16814125294

I'm having difficulty changing the voltages for this card. With NiBiTor 5.2 bios editing utility, the highest I can get the voltages is 1.18V, but I desire to get about 1.36V if possible. The voltage IC button is greyed out for me and I can't access it.

I was trying to use the hacked EVGA Voltage Tuner by AgentGod but it simply doesn't work for me, every time i click apply on a new voltage the meter simply resets and nothing happens. This is strange because people claim to get this hacked evga voltage tuner to work on Gigabyte GTX 260's.

I also tried to use rivatuner to use MSDOS to change the voltages but the Voltage regulator output doesn't show up for me like it does for other people. Even with the loaded VT1103.dll it doesn't show up. I've heard that all of these voltage methods are based on the VT11xx Volterra equipped cards, but I thought that the GTX 260's have these chips in them? Why am I having such a hard time modifying these voltages?

Ironically, Gigabyte has thier own set of video card overclocking software called the Gamer Hud Lite which claims to offer voltage tweaking, and i have seen screenshots of it where it DOES offer the voltage tweaking section, but when i install it it doesn't offer that section of the menu - it doesn't offer the voltage tweaking section at all!!

After some research on a program called Voltage Factory, the author claims it won't work on a GTX 260 with a 55nm manufacturing tech, which is what mine is. He says the soft volt mod will only work on GTX 260's with the 65nm tech. Is this because the 55nm GTX 260's don't have the Volterra voltage chips? Or do they?

Is there any way I can soft volt mod this card? Any help is greatly appreciated!! If it's not possible to soft volt mod this card, do you think I would see any major performance difference in getting a EVGA GTX 260 and soft volt modding that if the stock speeds were similar to the card I have now? Can anyone point me to the correct EVGA GTX 260?

Here is the bios of my card: http://rapidshare.com/files/313178077/GigabyteGTX260.rom