Is it possible to increase the voltage on any gtx980ti ? Even the stock models ?
I have a fully watercooled system. Currently with a gtx680 with an EK-waterblock. I recently tried to overclock the gtx680. But it seemed I wasn't able to increase the voltage. I used MSI Afterburner to set the voltage (and clockspeed). I could overclock ~100MHz at stock voltage without problems. Anything higher would crash the videocard. I increased the voltage (with Afterburner), but even then, the videocard would crash at exactly the same core-speeds. It seemed like the voltage wasn't increased at all. I use HWMonitor to look at voltage (and temps, etc). HWMonitor would show the increased voltage. But I suspected that number wasn't the real number on the card. Sources on the web seemed to indicate that you can't overvolt a stock gtx680 at all. Unless you modify the bios, or do hardware mods maybe.
I didn't continue, because I was planning to buy a gtx980ti soon. Still hasn't happened.
I was interested in a EVGA HydroCopper gtx980ti. Which has a waterblock. Still unavailable. So maybe I'll buy a SuperClocked EVGA. Or a stock one.
I suspect that you can overclock and overvolt the SuperClocked models even further (also from other vendors). I will put my own waterblock on a gtx980ti, so the cooling should be fine. Which will allow me to increase voltage and clocks even further. If the card can be overvolted of course.
So my question is: can every gtx980ti be overvolted and overclocked as much as you want ? Or are there limitations for specific models ? Would a changed BIOS be needed ?