**Official GTX680 Overclocking Thread**

[ALXAndy]

I can go 7mhz more than you rusty on the GPU offset but anything over is unstable. I ran a loop of heaven for a few hours whilst at work, came back and it was still going.

Good enough for now, till they unlock the volts. I know there is more in the tank.

Also I run my mem clock @ 206 but didn't notice any difference at going more or less TBH. Anybody else notice a difference?

I don't think they will unlock the volts Greg.

I think they might leave that as an option for OEMs like MSI and Asus but I think they are hiding it from the consumer for a reason.

Yeah yeah, I know, suspicious old me as usual, but I just think they have already pushed the card to the limits so that it can run games well.

 

[Jay85]

So over volting doesn't work at the moment then??

 

[Deception]

Nice to see what these are capable of. Been looking at one for my XL2420T, combined with 3D vision

 

[Gregster]

I don't think they will unlock the volts Greg.

I think they might leave that as an option for OEMs like MSI and Asus but I think they are hiding it from the consumer for a reason.

Yeah yeah, I know, suspicious old me as usual, but I just think they have already pushed the card to the limits so that it can run games well.

Wouldn't surprise me if they didn't but I know it is only volts holding it back. Temps are good so I would like to push for more.

So over volting doesn't work at the moment then??

No bud I tried to up the volts but it just switched back.

 

[Jay85]

Over volting would be amazing, i can see these cards smashing the 1500 limit!!!

Would it be a bios update then or simply forceware?

 

[straxusii]

24/7 stable I use:

P +120%
C +150Mhz
M +500Mhz

To test these settings I had heaven 3 running in window mode on free camera but not moving, as I made the change to both core and mem I could see the framerate increase so could be sure I was actually seeing a benefit.

 

[straxusii]

For reference in the EVGA Precision X faq it has this to say on voltage adjustment:

Q. When I adjust voltage on my 600 series card, the value doesn’t stick! What do I do?
A. The 600 series cards are very dynamic, and adjust voltage in real time to match the operating frequency. On a 600 series card, the voltage slider specifies a "maximum" voltage. Note: On a 600 series card, setting a custom voltage level does not always allow for higher overclocks, in fact it may even decrease clocks by increasing heat and power draw. It is not recommended to change voltage on 600 series cards.

 

[Gregster]

Every time I try too hard with Heaven bench, I crash to desktop and I see my temps are sitting at ~40c. This tells me heat is not the issue (in the 4-5 seconds it takes to CTD temp will not be much higher)

I am looking forward to the next drivers to see what comes with it. I have no idea if they will treat us to a BIOS for the 680 so we can 'lock' in volts but this would be the easy way.

TBH, I don't like this out of the box OC and would prefer the old way but all good.

 

[Biffa]

When I pushed the memory too far I got nice grey flowers blooming all over my heaven bench. When I push the core too far it crashes with a dx11 device removed error or something like that and it does it before I even get a chance to push F9 to start the bench

 

[Gregster]

Power target @ 132%
GPU clock offset @ 184mhz
Mem clock offset @ 451mhz

I could get the GPU offset to 185mhz but this returned 5 points less in heaven. This is unstable at this ("The display driver has stopped responding") but I could complete a run of heaven to beat my previous score.

 

[Nocky24]

I can literally only get mine to boost to 1201mhz on the core, any higher and its game over and back to desktop. Settings are 100%/+91/stock memory. I've noticed the power utilisation percentage doesn't go over circa 90% in BF3 so any variation of this slider against a higher core clock doesn't yield better stability.

Would you consider returning a poor clocker or just live with it?

Having said that I'm pleased with the stock performance and I suppose a 1201mhz core clock isn't anything to turn your nose up at. It's just that most people seem to be getting far better clocks and I just feel a little short changed I guess

 

[wolvers]

For reference in the EVGA Precision X faq it has this to say on voltage adjustment:

Q. When I adjust voltage on my 600 series card, the value doesn’t stick! What do I do?
A. The 600 series cards are very dynamic, and adjust voltage in real time to match the operating frequency. On a 600 series card, the voltage slider specifies a "maximum" voltage. Note: On a 600 series card, setting a custom voltage level does not always allow for higher overclocks, in fact it may even decrease clocks by increasing heat and power draw. It is not recommended to change voltage on 600 series cards.

That's it then, they're not going to clock any higher. It's not really an overclockers card this one, most of it's been done already.

 

[straxusii]

That's it then, they're not going to clock any higher. It's not really an overclockers card this one, most of it's been done already.

I partially agree, I got +150Mhz out of it and 500 on the ram, I'm not disappointed by those clocks at all.

It is a shame we can't add a voltage bump as the cards are so cool you just know there is a lot more in there.

 

[wolvers]

It sounds like you are already adding a voltage bump. Sorry, Nvidia are doing it for you on the fly.

I'm not criticising, it creates a product for a different buyer. I would just prefer to have the control myself.

Did you mean 'I'm not disappointed by those clocks at all'?

 

[Sin_Chase]

Mine boosts to 1275 quite comfortably.

Seeing as the card is pretty much doing it all who cares about manual control?

What would be nice is to be able to increase the maximum limit the internal algorithms use to see if more stability can be gained but even without it - 1200-1300 boosted clocks for changing 2 sliders is pretty damn good.

I am sure either BIOS updates or otherwise will open this up in the coming weeks/months. Perhaps some of the AIC OC Versions will have custom BIOSes we can steal.

 

[Sin_Chase]

Just an addendum to the above. I think we need to change our mentality towardws overclocking GPUs.

Constant MAX Core Clocks are archaic now in the face of Kepler. Infact they are useful for one thing and one thing only - benchmarking.

For anyone who could not care less about benchmarks (And really, that should be 100% of gamers at the end of the day) the Kepler dynamic approach is far more sensible and, in reality, far more beneficial to gamers.

You want the high boosts when you need them to keep your min/avg frames up, max frames are irrelevant in games. Having fully dynamic voltage is preferential, keeps your heat output down when you do not need that boost to maintain min frames and gives you headroom to boost the crap out of the core when you do.

Rather than fixing your voltage and core and generating heat 100% of the time for the benefit of nothing but max framerates.

I think nVidia got this one spot on and the "Delivering a consistent smooth gaming performance" sentiment is exactly what us gamers should want. At the end of the day does it matter how it does it?

 

[wolvers]

I'll reply because I assume that you're addressing me.

It's a fair point and is why I said that it creates a product that suits some people. As an enthusiast I like to get the most out of the components that I buy, and that means overclocking them as much as possible. The GPU boost feature does some of that for you, and that inflates it's stock performance relative to it's competitors and allows the maker to charge more for it. To be fair to Nvidia, they haven't done that as much as they could have done with the 680, but if they'd released it with the kind of stock clocks that AMD do (and subsequent clocking headroom) they would have had to price it accordingly. In short, you pay them to do some of the clocking for you.

 

[Sin_Chase]

Boost is just another way of OCing. It does not stop you pushing the card further. It is way too early to call OCing to the max dead on Kepler as we have no idea what, if any, voltage adjustments we will be able to make.

It might already support more voltage but the internal wizardry will not go there because of another variable - temp for example. It might just be a case of adjusting the stock temp thresholds and the card will apply even more voltage of it's own accord.

 

[Jay85]

Just an addendum to the above. I think we need to change our mentality towardws overclocking GPUs.

Constant MAX Core Clocks are archaic now in the face of Kepler. Infact they are useful for one thing and one thing only - benchmarking.

For anyone who could not care less about benchmarks (And really, that should be 100% of gamers at the end of the day) the Kepler dynamic approach is far more sensible and, in reality, far more beneficial to gamers.

You want the high boosts when you need them to keep your min/avg frames up, max frames are irrelevant in games. Having fully dynamic voltage is preferential, keeps your heat output down when you do not need that boost to maintain min frames and gives you headroom to boost the crap out of the core when you do.

Rather than fixing your voltage and core and generating heat 100% of the time for the benefit of nothing but max framerates.

I think nVidia got this one spot on and the "Delivering a consistent smooth gaming performance" sentiment is exactly what us gamers should want. At the end of the day does it matter how it does it?

+1 to this

 

[wolvers]

Boost is just another way of OCing. It does not stop you pushing the card further. It is way too early to call OCing to the max dead on Kepler as we have no idea what, if any, voltage adjustments we will be able to make.

It might already support more voltage but the internal wizardry will not go there because of another variable - temp for example. It might just be a case of adjusting the stock temp thresholds and the card will apply even more voltage of it's own accord.

Yes, possibly.