Ok, so i have my current overclock at +100mhz and +250mhz mem. Been stable for ages so i tried +125mhz on core and crashed in witcher 3 after 30 min so i guess i need to up the voltage. My question is can i break my card from increasing voltage? Using EVGA precision X.
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Overclocking GTX 780 3GB?
- Thread starter BriT
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Soldato
- Joined
- 17 Jun 2012
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- 5,951
What is the stock core clock?
I've never used precision X so can't advise on how to set it up, but with Afterburner I have the voltage and power limit % sliders set to max and my max stable overclock is 1228 core, I don't bother with mem as I've never seen it make any difference.
I've never used precision X so can't advise on how to set it up, but with Afterburner I have the voltage and power limit % sliders set to max and my max stable overclock is 1228 core, I don't bother with mem as I've never seen it make any difference.
default core is 863mhz boost 902mhz. I can only seem to go as high as 106% on power limit. What's your voltage under load? Mines 0.8750 at idle. Mine is water cooled as well so temps are not a problem so may as well just max out the voltage?
No guarantees but loads of people have been running them on additional voltage fine for ages - I've seen it claimed that if you run them on the higher unlocked voltage (1.212V) it decreases the lifespan to IIRC 5 years or something but dunno how true that is.
These cards tend to respond to additional cooling before extra voltage though to a point - I hit the same max clock in mine with the last 2-3 voltage bins unless I drop the temperatures substantially at which point I can get a few more MHz from the extra volts.
Try getting the core up first with stock memory clocks then increase memory clocks - a lot of stuff isn't particularly memory bandwidth limited on Kepler and it can sometimes reduce your max core overclock.
These cards tend to respond to additional cooling before extra voltage though to a point - I hit the same max clock in mine with the last 2-3 voltage bins unless I drop the temperatures substantially at which point I can get a few more MHz from the extra volts.
Try getting the core up first with stock memory clocks then increase memory clocks - a lot of stuff isn't particularly memory bandwidth limited on Kepler and it can sometimes reduce your max core overclock.
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I would start with adding the +36mv that is available in Precision X and then see how much further you can wind up the clocks. My primary card (I have 2 in SLI) will do over 1250 on the core with the extra volts. Temps around + 23C over ambient, I'm on water like you.
If you want to get more adventurous you can look at custom BIOS and even more volts.
If you want to get more adventurous you can look at custom BIOS and even more volts.
Soldato
- Joined
- 17 Jun 2012
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- 5,951
Just tested mine, set to stock volts max core it will do is 1202, so the extra volts doesn't really make much of a difference to mine. FWIW power limit doesn't seem to matter either as monitoring it with AB it never gets any higher than 90% ish even with GPU load at 99%, so both settings seem pretty useless to be honest.
