• Competitor rules

    Please remember that any mention of competitors, hinting at competitors or offering to provide details of competitors will result in an account suspension. The full rules can be found under the 'Terms and Rules' link in the bottom right corner of your screen. Just don't mention competitors in any way, shape or form and you'll be OK.

Need help Overclocking DCU2 780 GTX

mjenabi2

mjenabi2

mjenabi2

Associate
Joined
18 Sep 2013
Posts
205
So i got my card yesterday and im actually a bit disappointed with the second price drop, i would have bought the Inno3D GeForce GTX 780 iChill HerculeZ if it was £400 yesterday, but anyways...

zF7C1XA.jpg

I've tried to overclock it and cant seem to be able to increase anything without compromising system stability.

on stock, it hist 1030mhz, which is higher than the default boost clock but that seems to be nvidia's boost 2.0.

i know it's simple enough with the afterburner or evga's precision, but i seem to be doing something wrong. I dont actually need the oc for all games, just a handful of games like Crysis 3 and Metro last light etc.

I was up all night last night making sure my whole system is stable, so i restored everything back to default and after a few hours, i have a very stable system with my cpu at 4.6ghz. so just need to do the same with the gpu but have no idea how.

my system:

Asus Sabertooth Z77
Intel i7 - 3770K + Noctua DH14
16GB samsung green
1 x SSD, 2 x HDD
750 watt thermaltake though power
Corsair 600T case
 
So, you are running unigine heaven for example, and as soon as you bump the afterburner clock to +20 on core, it crashes? Am I understanding this right?

What kind of temperatures are you running it on, and have you adjusted the powerlimit slider to at least 115%?
 
MooMoo444 said:
The clock seems kinda low for what I hear 780's can do. Have you tried more voltage?
Click to expand...

I think the voltage is locked to 1.175 max. on all Kepler cards except lightning and power editions.. or custom bios.

I have been reading these reports that people get a 100mV boost by using the voltage slider.. but they are all inconsistent. Maybe a 780-clocker can verify?
 
What clocks is it crashing at? My Asus with the ref cooler will do 1177/6300 @stock 1.162v with the power meter maxed at 106%. Didn't touch the overvoltage. That's using EVGA Precision.
 
Make said:
So, you are running unigine heaven for example, and as soon as you bump the afterburner clock to +20 on core, it crashes? Am I understanding this right?

What kind of temperatures are you running it on, and have you adjusted the powerlimit slider to at least 115%?
Click to expand...

yeah. regarding of what i increase, be it temp+voltage, memory or the actual clock.

as i said, it hits 1030 on stock but even when i set it to 1030 it sort of crashes.

i used EVGA precision and moved the temp target slider to 85c and it immediately crashed with loads of artefacts on the screen
 
If it runs on stock it unfortunately does not class as faulty..

But it seems you really have got a crap card then. Short of completely cleaning drivers and afterburner/presX, I can't really say what else to do..

Or DSR the card afterwards if you are not happy.
 
Make said:
If it runs on stock it unfortunately does not class as faulty..

But it seems you really have got a crap card then. Short of completely cleaning drivers and afterburner/presX, I can't really say what else to do..

Or DSR the card afterwards if you are not happy.
Click to expand...

no i dont think it's faulty at all. and i must add that i did a fresh install of windows 8.1 when i got the card.

i just think im not doing it right? can i use someone's numbers for a slight overclock and up it bit by bit to see how far it goes?

ive only heard good things about this card and since the silicon lotto doesnt apply to memory and i was unsuccessful at ocing the memory as well, i think im doing it wrong.

also what is DSR?
 
DSR is distance selling regulations, which means the right to return a product if it's been bought without seeing the seller in person (In short in this context).

So even if you OC the memory just 50mhz you get a crash? Normally memory OC just causes artifcats.. hmm. Un-install all the clocking programs and then re-install afterburner only. PresX sometimes causes weird problems.
 
Make said:
DSR is distance selling regulations, which means the right to return a product if it's been bought without seeing the seller in person (In short in this context).

So even if you OC the memory just 50mhz you get a crash? Normally memory OC just causes artifcats.. hmm. Un-install all the clocking programs and then re-install afterburner only. PresX sometimes causes weird problems.
Click to expand...

i will do that. so should i up it by 50-100 and keep increasing until i find the limit and the move on to the core clock?

do i need to adjust the voltage?
 
mjenabi2 said:
i just think im not doing it right? can i use someone's numbers for a slight overclock and up it bit by bit to see how far it goes?
Click to expand...

There's very little to get wrong unfortunately. You're most likely doing it right :( Just try bumping it up from stock clocks in core increments and give it a pass on Heaven each time. If it works ok just keep going until it crashes. You'll find your max overclock that way.

I'd just install one of the overclocking apps and remove the rest as well. Precision or Afterburner are the best imo.
 
mjenabi2 said:
i will do that. so should i up it by 50-100 and keep increasing until i find the limit and the move on to the core clock?

do i need to adjust the voltage?
Click to expand...

No need to touch the voltage, but the powertarget should be at +115% at least.

Start with core OC, then go for the memory afterwards. Memory is not really important compaired to core.
 
Make said:
No need to touch the voltage, but the powertarget should be at +115% at least.

Start with core OC, then go for the memory afterwards. Memory is not really important compaired to core.
Click to expand...

do i raise the temp threshold as well? and which should be prioritised?
 
Both mine can hit 1300MHz+

To start with make sure you've got the Power limit @ 110% and the COre Voltage @ +37/38mv ( whatever yours goes to ) then start putting up your Mem and core sliders.

Don't bother with linking or prioritising, I've had much better results doing this manually.

Make sure you only have 1 OC program running at a time and make sure they are all reset to defaults.
 
Klunt Bumskrint said:
Both mine can hit 1300MHz+

To start with make sure you've got the Power limit @ 110% and the COre Voltage @ +37/38mv ( whatever yours goes to ) then start putting up your Mem and core sliders.

Don't bother with linking or prioritising, I've had much better results doing this manually.

Make sure you only have 1 OC program running at a time and make sure they are all reset to defaults.
Click to expand...

which programs do you use?
 
You can raise the temp threshold if you are comfortable with it. Prioritize it too if you are ok with it.

Bump the core by +15 after heaven bench run, no more.. start out soft.

(Kepler actually goes up in increments of 14, 28, 42, 56 etc.. but +15 is alright rounding).

Perhaps you have done it wrong in the start after all and your card is fine :)

Oh, and if someone with the actual card comes and gives you different advice, ignore me. I haven't tried the boost 2.0 cards myself, so mine is just general advice.
 
You must log in or register to reply here.
Back
Top Bottom