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post #10581 of 21377
Quote:
Originally Posted by tainle View Post

yes i think this chart help. but 225+ core only need +36mv?

here is some info...i got evga gtx 780 classified card. running on air..i have 1.28750V on classy controller and running sky rev4 bios..i get error after a while in starcraft 2..and when i run 3mark11 i get a workload failed message. when i run fire strike from 3dmark 13 i didnt get any error and manage to complete it, higher score than stock...

on PX,,

power target 140%
Temp target 95%
GPU clock offset +135
mem offset +350...

how come it is unstable? bad card?

1.2875v is very high on air. You need to check your core and especially VRM temps. The higher you OC the lower you have to keep core and VRM temps.

You should not need that much voltage for +135 on the core. It's possible but I think on air you'll actually get better results with lower voltage.
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post #10582 of 21377
......................+135 could be anywhere between 1150Mhz to 1350Mhz core clock unless you using a boost disabled bios 2cents.gif
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post #10583 of 21377
Quote:
Originally Posted by lilchronic View Post

......................+135 could be anywhere between 1150Mhz to 1350Mhz core clock unless you using a boost disabled bios 2cents.gif

the skyn3t classy rev4 is boost disabled i believe...+135vcore i cannot run 3dmark 11 performance test stable..it freeze at the first scene 10 seconds in and it jump to desktop telling me the display drivers crashed. is there a good custom rom that have boost feature?
post #10584 of 21377
Quote:
Originally Posted by lilchronic View Post

......................+135 could be anywhere between 1150Mhz to 1350Mhz core clock unless you using a boost disabled bios 2cents.gif

That's true. I'm just assuming his boosts to 1,123MHz or 1,136MHz at stock like most 780 Classifieds I've seen.
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post #10585 of 21377
http://www.techpowerup.com/gpuz/cnx9z/

I'm having issues trying to overclock my card. Should I use Afterburner or PrecisionX? Also, I noticed the Classified Voltage program. Do I need that while I'm running on air or is the max +63 voltage in both programs fine enough? Lastly, is there anyway to change how the sliders show the additional clocks? I'm so used to a whole number as oppose to just "+X" where X is just some minuscule number in comparison.
post #10586 of 21377
Quote:
Originally Posted by coelacanth View Post


With the memory, since you have Samsung, I would start at +250 (+500MHz effective). Samsung and Hynix should have no problem doing +250. My Samsung does +500 and I have not tried going higher than that. I have seen many posts where people have gotten Samsung to +400 (+800MHz) and beyond.

I have not played with PCI-E voltage or PWM setting with the Classy Voltage Tool.

There is no way to have the Classy Tool apply settings at startup, and many people have said that it's by design. You don't want to be benching and forget you set 1.5v and then the next time you restart you've forgotten it's set to 1.5v and you destroy your card.

So... I'll have to start it every time I wish to have my card OC'ed (that'll be annoying especially if I forget and crash because EVGA precision applies the OC on startup.

     
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post #10587 of 21377
Quote:
Originally Posted by tainle View Post

the skyn3t classy rev4 is boost disabled i believe...+135vcore i cannot run 3dmark 11 performance test stable..it freeze at the first scene 10 seconds in and it jump to desktop telling me the display drivers crashed. is there a good custom rom that have boost feature?

you cant have +135vcore. please state what you're actual boost clocks are read from precision x or afterburner wink.gif

.... the bios you're on now if fine changing the bios isnt going to make you card overclock any better it just going to raise the power target so you have more headroom to raise voltage
Quote:
Originally Posted by coelacanth View Post

That's true. I'm just assuming his boosts to 1,123MHz or 1,136MHz at stock like most 780 Classifieds I've seen.


my regular classy boosted to 1150Mhz and my kingpin boost's to 1189Mhz with stock and ln2 bios ive also seen quite a few boost to 1202Mhz and 1215Mz
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post #10588 of 21377
Quote:
Originally Posted by gatesmarch View Post

Unlocked simply means you can go above 1.212mv with the Classy tool, which is as far as Precision X "locks" you down to.

I am using stock BIOS and i also use the classy tool. I am @ 1.25v 24/7 and my voltage is not "unlocked" ... thats why I am confused right now ...
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post #10589 of 21377
Quote:
Originally Posted by Maxincredible52 View Post

I am using stock BIOS and i also use the classy tool. I am @ 1.25v 24/7 and my voltage is not "unlocked" ... thats why I am confused right now ...
Stock bios is limited to 1.2v without Classy Tool. With skyn3t you can go up to 1.21v.
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post #10590 of 21377
Well, I was just sitting here browsing the web...default everything...my screen went black and came back with the good ole' "You display driver has stopped responding and has successfully recovered". When I had my HD7950 all I would hear about is AMD's horrendous drivers. I never had a single issue with that card or it's drivers. Once I found a stable OC it was fine and I never had a single issue. This dang card will be stable at 1275mhz one day, the next day it will crash and will only go up to 1225mhz. I'm going bonkers. I'm on the 334.67 beta drivers due to the latest drivers screwing everything up. I guess I'll rollback yet again to 332.
Edited by gatesmarch - 3/18/14 at 6:32am
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