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GTX 770 Gigabyte Windforce , low overclock overhead .

post #1 of 9
Thread Starter 
Hey guys , im often consulting your forums on my hardware related questions so i decided to ask your advice on this subject .

I've got a GTX 770 Windoforce and i im loving it so far . Incredible performance , but as usual i just whant to see how far can it go smile.gif .
The thing is , it just doesnt live up to the clocks i've seen on other 770's on the web . I know each card is different but i still can't help but wonder , if it's me and im not doing something right . I'm fairly new to overclocking .
The most conservative clocks ive seen are around 1220 core base(1260-70 core boost) and about 1900 memory .
Mine remains stable only at about 1153 core (1225 boost) and 1850 memory . Any settings above that crash Heaven benchmark at a different runing time , the higher the clock the faster the crash ofcourse . Higher clocks work fine with 3D mark and games like Crysis 3 , but Heaven and Battlefield 3 crash relentlessly . This is at both base voltage and the max allowed overvolt in Precision +12mV .
i'm using EVGA Precision and GPU-z . In precision i have slided the power and temp target to the maximum allowed 111% and 94*.
The temp is fine it runs pretty much the same as it did before, around 70-75 at full load for a prolonged period of time .
I'm using the latest 327 drivers .
Any advice would be greatly appreciated!
Should i just accept the fact that i have a mediocre card for overclocking ?
post #2 of 9
Looks like you might have lost the silicon lottery. =./

Are you sure you aren't hitting the power limit of 111% It is possible that you are putting too much voltage to the OC. Try stepping it up a little at a time and see if you can find stability like that. Also, whenever you crash Heaven, restart your PC and start fresh. That also will weed out any issues.
post #3 of 9
Thread Starter 
According to EVGA Precision's Power monitor , it was using 87% power when crashing with an unstable clock of 1240(boost) for example .
GPU-Z shows 68% TDP .
Precision doesn't let me lower the voltage under 1.2 .
Thanks for the prompt responce !
post #4 of 9
Quote:
Originally Posted by Nighty View Post

According to EVGA Precision's Power monitor , it was using 87% power when crashing with an unstable clock of 1240(boost) for example .
GPU-Z shows 68% TDP .
Precision doesn't let me lower the voltage under 1.2 .
Thanks for the prompt responce !

So it's either +12mv or no extra voltage?
post #5 of 9
Hey, i have the same card. It runs fine at 1293mhz, but unigine reports like 50mhz over what i have set, and acts like it too in terms of stability. There might be a bug with these cards in particular, because my heaven says ~1290mhz when i'm at stock and is borderline unstable, but other stuff runs fine when i manually clock it to my limit of ~1293.

Heaven reports 1293 when msi afterburner and evga precision report 1254, but i think that it's actually running at 1293.
Edited by Cyro999 - 9/22/13 at 8:01am
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post #6 of 9
Thread Starter 
@jameyscott
Yes there is either +12 mV or nothing it doesnt go up or down .

@Cyro999
That is my case too , Heaven reports even more of a difference here , when Precision and GPU-Z report 1240 current clock (boost) heaven is above 1300+
My tought was the same , that there is a bug with Heaven and these cards . Problem is Battlefield crashes too ...
Crysis 3 for example runs at 1280 and +400 on the memory . But its a total system stability that I'm after .
post #7 of 9
What kind of offset can you run with battlefield vs Crysis 3?

It may just be slightly harder to keep stable, worst case scenario just make another profile for it and flick 'em over (you can even do it with a hotkey probably) when you play
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post #8 of 9
Thread Starter 
Well Battlefield can run stable only at +20 core and +300 memory
I havent tested Crysis 3 on how far it can go , but it did +75 and +400 once , before i started experimenting with Heaven .
I'll probably run some tests and make a profile just for Crysis , since that is the only game that might have some use for it . All other including battlefield run just perfect on max settings . I started testing Battlefield only because someone said it is a good overclock test (a bit too good obviously tongue.gif )
Still , I'm open to suggestions for overall stability .
post #9 of 9
Ignore clocks on Heaven/valley they seem to be just broken. BF might be a good oc test, i didn't find anything that can give me issues on 1293 core yet but i also didn't play a lot of games. A few mhz on core won't matter too much, but if you care about it you can just make a few profiles for whatever works with which game, you might have a problem one in particular. I dunno how good practice that is, stay low clocks if you want. It's just super super easy to switch, a few clicks or even a keystroke
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