Have you tried setting memory to +0 offset and overclocking the core by itself? Sometimes when memory frequency is maxed out, this limits the core OC a bit. Is your power target at +132?

Try what linuxrouter said, and if that doesn't help then follow StyoFosho's advice.

Not all 680's are created equal. I myself have one that overclocks well and another not so well

Make sure GPU voltage is going to 1175mV

Yeah, no 680s are the same, either u get 1 that can't OC things u might need, or u have the Golden-chip that full of awesome. Something that Nvidia should've fixed before shipping out the Cards.

My 680 does
Power target: 132
Core offset: 118
Mem offset : 525
Core clock 1255
If i try 119 or above card becomes unstable, but 118 after few hours of gaming, benchmarks no problems at all *shrugs
Maybe I'll try 0 memory offset and see if I can go above 118 on core offset.

EVGA GTX 680 Superclocked here
 
Power +132
GPU Clock Offset = +35 ( 1250 )
Mem Clock Offset = + 350
 
Power shows 1.175 volts under load
 
Runs Heaven Enigene like a charm at above specs
 
Hope this helps
 

lots of great advice and thanks but i already tried everything i can with it,the way iv always gone about finding max oc is i start with core first not touching vram find its max then i i find the max possible mem speed whilst leaving core at default once i have both numbers i put em together iv never bothered upping voltage to my gpus, though from what i understand we cant touch the voltage with these cards correct?...so yeah my card is a dud thats why i made this thread to see if many others have had such luck

David20player

CaptainVideo

so the card performs great and all but it OCs like crap, as in +50 (for 1161mhz) on the core, the ram clocks well at +500, is alot of people seeing these abysmal gains or am i just very unlucky

I'm curious what is your ASIC Quality in gpu-z is? My card doesn't overclock very well at all and have an ASIC Quality of 92.5% in gpu-z .0.6.1. The most I've been able to push my card is 1150 Mhz stable.
I'm going to aim for 1161 Mhz tonight to see how it runs. I thought I already tried it but somehow I didn't document it. I like to create an excel spreadsheet of the gpu offset and clock speeds I've tried. In there I enter in if it artifacts or runs stable.

i have solid proof that the asic quality thing is just a bunch crap,i just checked mine and its 100%...according to gpuz little chart on how to interpret asic quality my card should be a chanp but that sure as heck aint the case at all...even raising the core to +55 causes heaven to crash and oc scanner to stop working

David20player

CaptainVideo

David20player

CaptainVideo

so the card performs great and all but it OCs like crap, as in +50 (for 1161mhz) on the core, the ram clocks well at +500, is alot of people seeing these abysmal gains or am i just very unlucky

I'm curious what is your ASIC Quality in gpu-z is? My card doesn't overclock very well at all and have an ASIC Quality of 92.5% in gpu-z .0.6.1. The most I've been able to push my card is 1150 Mhz stable.
I'm going to aim for 1161 Mhz tonight to see how it runs. I thought I already tried it but somehow I didn't document it. I like to create an excel spreadsheet of the gpu offset and clock speeds I've tried. In there I enter in if it artifacts or runs stable.

i have solid proof that the asic quality thing is just a bunch crap,i just checked mine and its 100%...according to gpuz little chart on how to interpret asic quality my card should be a chanp but that sure as heck aint the case at all...even raising the core to +55 causes heaven to crash and oc scanner to stop working

That's unfortunate that both of us can't overclock well at all. I guess its back to stock for me after tonight.

unfortunate indeed but theres no reason to go back to stock,at stock my card does 1110 with my pathetic oc it does 1161 i though i set it to +49 so i get a nice even 1160,sure it isnt much of anything but nevertheless its still faster then stock and runs just as stable so why turn it down right,thankfully i can get my mem to run pretty high according to gpuz i have 224.9GBs of bandwidth which is a nice step up from the default (580 style bandwidth)so im happy for that at least