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Gtx 970 G1 Gaming Voltage Hard-mod Help

post #1 of 12
Thread Starter 
I'm not afraid of the ol' soldering iron, I'm just not familiar with hard modding so I don't know what points I'm looking for. I'm currently on a modded bios stable at 1600 MHz core and 7600 MHz memory on air, and want to know if I can push the voltage higher for a higher clock (especially on memory, as mine is pretty weak) if I make the switch to water. I have no need to spend money on water at this voltage, as I max out at 62°C running Valley for hours, with the VRMs keeping reasonably cool as well.

In short, if anyone has any experience wiring this card, or can point me in the right direction, that would be awesome.
post #2 of 12
Quote:
I'm currently on a modded bios stable at 1600 MHz core and 7600 MHz memory on air

At what voltage? My G1 maxes ~1500@1.25. Sry this doesn't help your questions though
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post #3 of 12
Thread Starter 
Quote:
Originally Posted by Cyro999 View Post

At what voltage? My G1 maxes ~1500@1.25. Sry this doesn't help your questions though
1.28v. No problem.
post #4 of 12
I have 0 practical experience with hard modding.
i have found this however

http://overclocking.guide/increase-the-nvidia-power-limit-all-cards/4/

Also go on Linus tech tips, theres a GTX 970 Owners Club thread, they'll be able to help. You might wanna have a talk with the thread author, username Gofspar (really knows his stuff), and I think Arniks8 on the same thread was hard modding his card.

Good Luck, and May the Clocks be with You
post #5 of 12
It doesn't unlock the voltage.
My card is voltage locked so I'd like to know too.
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post #6 of 12
Quote:
Originally Posted by white owl View Post

It doesn't unlock the voltage.
My card is voltage locked so I'd like to know too.

Look up the Vreg, and hack in DIP switches or something to feed it the right binary number to get the voltage you want. On locked Vregs on nvidia cards, that's locked in the driver, so the only way to bypass it is to physically enter the right data to the Vregs.
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post #7 of 12
Quote:
Originally Posted by GooseG View Post

I'm not afraid of the ol' soldering iron, I'm just not familiar with hard modding so I don't know what points I'm looking for. I'm currently on a modded bios stable at 1600 MHz core and 7600 MHz memory on air, and want to know if I can push the voltage higher for a higher clock (especially on memory, as mine is pretty weak) if I make the switch to water. I have no need to spend money on water at this voltage, as I max out at 62°C running Valley for hours, with the VRMs keeping reasonably cool as well.

In short, if anyone has any experience wiring this card, or can point me in the right direction, that would be awesome.

When you find out how to feed this card more voltage could you let me know too? I need to get this to 1700mhz+

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post #8 of 12
Can you identify which voltage controller your card uses? Start pumping any readable codes from the chips on your card into google.

On my card there is at least three, one for GPU core and two memory related.

From what I gathered over the last couple of weeks you simply solder in a "trimmer pot" / variable resistor onto the voltage controller's voltage sense pin + ground.

The correct pin will be detailed in the datasheet for your controller.

Once the trimmer is setup the controller then thinks it is not sending enough voltage so it compensates with more.

I was quite surprised that's all it took so perhaps it's not that simple any more, my experiment was on a older card.
post #9 of 12
Although GPU-Z only shows 1.275V I was told that the cards max out at 1.31V when set in BIOS. Or at least for the 950. Pushing it to that gave me +10 MHz stable when folding.

Is there any hard mod to further increase the voltage?
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post #10 of 12
Quote:
Originally Posted by Ized View Post

Can you identify which voltage controller your card uses? Start pumping any readable codes from the chips on your card into google.

On my card there is at least three, one for GPU core and two memory related.

From what I gathered over the last couple of weeks you simply solder in a "trimmer pot" / variable resistor onto the voltage controller's voltage sense pin + ground.

The correct pin will be detailed in the datasheet for your controller.

Once the trimmer is setup the controller then thinks it is not sending enough voltage so it compensates with more.

I was quite surprised that's all it took so perhaps it's not that simple any more, my experiment was on a older card.

I want to try this mod on my golden card, I do have others I could mod too but from what I have seen with a viariable resistor you can push a lot more voltage into the card, though I do not wish to go too crazy, I just want to hit 1700mhz and I'll be happy on water if I get myself a LN2 pot I'll max it out when it comes to the end of it's life.
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