GPU overclock crashes

[cheekboys]

Hi, I have a GTX 780 SC and when I overclock it to +90 the driver crashes after a few mins of playing a game. So my question is what causes an unstable OC? Is it heat? Would adjusting the fan curve make the overclock stable? Thanks!

[Semper]

It's likely not heat, however it is possible. 

 

Download MSI Afterburner or Precision X and monitor your temps.

 

Some cards just don't overclock well, however, and this is the more likely scenario.

[huracan]

if the voltages are a bit down it might upset the card this is one reason and heat might be an issue but since after market coolers are friking awesome nowadays i dont think temp is  a big deal! just make sure to research about your card before ocing it!

[Dango]

How much overclock are you running at. How much volt are you pushing to the core. 780 should never over 85C.

[cheekboys]

How much overclock are you running at. How much volt are you pushing to the core. 780 should never over 85C.

I am running at +90 Core and +400 Memory and I am getting around 73C and I am running at max voltage that MSI Afterburner will let me go to which is +62.

[cheekboys]

if the voltages are a bit down it might upset the card this is one reason and heat might be an issue but since after market coolers are friking awesome nowadays i dont think temp is  a big deal! just make sure to research about your card before ocing it!

The thing is I have seen people overclock this card to over +100 core even up to +150 in some cases.

[kwljunky]

The thing is I have seen people overclock this card to over +100 core even up to +150 in some cases.

Silicon lottery mate! 

[huracan]

The thing is I have seen people overclock this card to over +100 core even up to +150 in some cases.

yeah but keep an eye on their voltages like and make sure your powersupply can supply enough ! 

[cheekboys]

yeah but keep an eye on their voltages like and make sure your powersupply can supply enough ! 

Will a CX600M supply enough power to overclock it?

[huracan]

i cant honestly answer the question bcoz if you have a demanding processor it might vary but if you have like a non OC intel processor or a non OC'd amd fx8300e or below it should be plenty!

[cheekboys]

How much overclock are you running at. How much volt are you pushing to the core. 780 should never over 85C.

Can too high on the memory clock cause it to crash as well? I was looking here http://hothardware.com/Reviews/EVGA-GeForce-GTX-780-with-ACX-Cooling/?page=11 and I see they only have memory clock at +160 but I have mine at +400.

[cheekboys]

i cant honestly answer the question bcoz if you have a demanding processor it might vary but if you have like a non OC intel processor or a non OC'd amd fx8300e or below it should be plenty!

I have an Intel Core i5 4670K.

[huracan]

I have an Intel Core i5 4670K.

should be plenty considering its an haswell processor 

[Dango]

I am running at +90 Core and +400 Memory and I am getting around 73C and I am running at max voltage that MSI Afterburner will let me go to which is +62.

Looks like the overclock is unstable. Tune down the memory or leave it at default. Try to run Valley for at lest 30mins to make sure its stable. Keep eye on the screen to see if there anything looks wrong in every frame (its mean bad over clock, tune down the core clock).

[Semper]

Can too high on the memory clock cause it to crash as well? I was looking here http://hothardware.com/Reviews/EVGA-GeForce-GTX-780-with-ACX-Cooling/?page=11 and I see they only have memory clock at +160 but I have mine at +400.

Have you looked up overclocking tutorials?

that may be a place to start.

Cranking everything up to max isn't necessarily always going to work.

 

Just because one person achieved "x" overclock with "x" hardware does not mean that you will achieve the same.

You may be able to exceed them, you may not be able to overclock at all, or you might lie somewhere in the middle.

[huracan]

Looks like the overclock is unstable. Tune down the memory or leave it at default. Try to run Valley for at lest 30mins to make sure its stable. Keep eye on the screen to see if there anything looks wrong in every frame (its mean bad over clock, tune down the core clock).

i think furmark is pretty good for stability tests than valley benchmark

[cheekboys]

The game that I am testing the OC on is Shadow of Mordor and it crashes within 1-2 mins with anything over +60 which is stable for me.

[cheekboys]

Have you looked up overclocking tutorials?

that may be a place to start.

Cranking everything up to max isn't necessarily always going to work.

 

Just because one person achieved "x" overclock with "x" hardware does not mean that you will achieve the same.

You may be able to exceed them, you may not be able to overclock at all, or you might lie somewhere in the middle.

I can't find an overclocking tutorial for a superclocked 780.

[Semper]

I can't find an overclocking tutorial for a superclocked 780.

Overclocking tutorials for Afterburner in general will help you figure out what to do.

[Dango]

i think furmark is pretty good for stability tests than valley benchmark

Valley can test core and memory, its more close to gaming. Furmark task more on core.

But I find out, some time I pass Furmark but crash Valley in 1 hour.

[Carde]

For the GTX 780 you need a flashed bios or the insanely low voltage limit will hold you back big time.

 

A Titan is not that much different and on a flashed bios I got that to 1.2Ghz flat (get a bios that turns off boost to, just flat rate clocks) with a stock cooler.

 

Flashing a bios is an other step up the ladder though and if your card does not have a dual bios feature you risk bricking it which makes it about as useful as a paperweight.