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The G1 allows up to 1.28V to be applied (which isnt safe with lesser coolers) but at least I will then get to choose how much voltage to sensibly apply.
#METRO LAST LIGHT BENCHMARK GTX 980 TI MOD#
I am tempted to grab hold of the Gigabyte G1 bios and mod the fan section to match my stock bios so the fan doesnt get under/over driven.
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The EVGA Classified and water cooled cards allow higher voltage so the silicon can take it.īut they have better coolers so temps must be kept down as that will likely age the card fast if not careful. It did go faster with higher fan but its already enough noise. I then tried a 1.25V 425W modded bios which permanently uses 1.25V and this got me to 1500MHz with 75% fan. It allowed another 24mV 1478MHz and I was then voltage limited because the voltage wouldnt go any higher due to EVGAs bios config. So initially I was power limited at 1440MHz, the 425W bios fixed that. Ie if I set 1.25V in the bios, under load it will always use 1.25V and cannot be changed higher or lower. This is why there is a separate modded bios that explicitly sets a higher voltage "in the bios" to run all the time. This appears to be the max the EVGA bios allows on the voltage slider and hasnt been modded out. This helped a little, I was no longer power limited and got it to 1478MHz with added voltage in AB.īut I found that the card was now voltage limited (afterburner showed the voltage limit was on) at a higher 1.223V. (the bios is taken from the same card range as mine, a slightly lower model using the same clock speeds) Using Afterburners monitoring tools I found that the card was hitting its power limit so blew a modded bios on it to lift max power to 425W. I can add more voltage in Afterburner but it doesnt raise the amount fed to the card. The EVGA SC+ ACX2.0+ limits me to 1.199V max with stock bios and a small addition to voltage in Afterburner. I'm not sure its worth the effort going further, not until I get 4K at least so I'll just leave it like this.Įach mfr uses different settings for their BIOS and these will vary in the card range as well. So whatever high voltage you want to use, you have to explicitly set it in the bios and it will always use that voltage under load. Turns out the bios modder didnt find a way to undo the lockout that prevents you selecting higher voltages with Afterburner, I was again limited to 1.223V max. Oh and because its the same bios used on all the modded bios versions, it doesnt redetect the card on reboot after flashing, it just worked straight away, coool.īrb, gonna try and get the lower voltage settings back. With 75% fan, it runs at 1500MHz just fine at around 78C sustained load. This might be because the steppings below 1.25V are not stable for everyone, I will see what happens after I mod it back in.Īnyhow, it does perform a lot better at 1.25V. Its currently idling at 37C with no fan after some heavy duty testing, nice.īefore blowing I spotted that the section for voltage control had the voltage set from 1.25V to 1.6V vs my original bios 0.6V to 1.6V.Īs expected, this set the minimum selectable load voltage as 1.25V. I modded it to turn the fan off below 60C by copying the fan control section from my bios. Curiosity got the better of me so I blew the 1.25V 425W air cooling bios.