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[Official] EVGA Classified & K|NGP|N Owner's Club - Page 989

post #9881 of 21377
Valley is likely where you will see the most stable clocks, and if those clocks are also game stable then I am happy for you. Are you getting any artifacting in games at those clocks at all?

Did you do a log run of GPU-z to check for any throttling during Valley and/or gaming? I am not saying your artifacting is because of temps, I am saying that the cooler you are the likely you can safely overclock higher at the same volts.
post #9882 of 21377
and one more thing-i am using for every day gaming 1310 mhz and for that i need to put on classy tool 1.23750V but when gaming voltage droops to 1.216V and oscillating there-all of that values are from gpu z .is driving me crazy the fact that i actually don't know how voltage for certain is using this card but from here some days i will receive my payment and will send money to one friend from usa and he will send me the probe it connectors and finally will see the voltages....
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post #9883 of 21377
say on 1371 mhz whit 1.326 V is rock solid in bf4 but you know tem is starting to reach values that i don't like to much and if i will try to get higher whit 1.326V card will crash.i need to put more voltage but temp don't aloud ....
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post #9884 of 21377
Can't you use the LLC mod on that 780 Classy? That way you don't have to worry about any droop.
post #9885 of 21377
yep i will try.....
strange in bf4 1371 mhz i need 1.296V rock solid but for unigine valley i need for the same overclock 1.326V i think that this win 8.1 pro dont like bencmark programs
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post #9886 of 21377
I would like to puch my GTX 780 Classified even further. I'm currently stable at 1300Mhz using the skyn3t rev4 BIOS and I was wondering if it was possible to raise the voltage to 1.25v without the use of the Classified tool? I don't want to have to keep starting up the tool whenever I start my computer up again. Thanks in advance.
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post #9887 of 21377
lol you failed to mention that! Yes, Win 8/8.1 is only better with 3dmark FS/FSE and just slightly at that but lower in all other synthetics I know of compared to Win 7.
post #9888 of 21377
i thing also that i will buy tomorrow 3d mark and will see.....
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post #9889 of 21377
Quote:
Originally Posted by gagac1971 View Post

and one more thing-i am using for every day gaming 1310 mhz and for that i need to put on classy tool 1.23750V but when gaming voltage droops to 1.216V and oscillating there-all of that values are from gpu z .is driving me crazy the fact that i actually don't know how voltage for certain is using this card but from here some days i will receive my payment and will send money to one friend from usa and he will send me the probe it connectors and finally will see the voltages....

Your card is not drooping. GPU-Z doesn't know how to read the card correctly. So when your voltage goes up under load, it gets confused and is telling you otherwise unless you have a faulty card. Since you have a decent overclock on air, that is highly unlikely. Since I have a TiC, I will let TiN give you some DMM readings on this thread at kingpincooling.com.

Here is the pertinent thread.
http://kingpincooling.com/forum/showthread.php?t=2549

The guy had the same complaint as you, heavy drooping noticed under software (GPU-Z). TiN at kingpincooling took notice and decided to show him why he should not trust GPU-Z by grabbing a card off of EVGA's assembly line. He then tested the card at 1.35 set. Idle read 1.357, under load it climbed to 1.404 under DMM.

So what happens is when your card goes under load is that it starts to droop. The Power management section sees this and increases the voltage to compensate. It is designed to go a bit overboard with compensation to help with stability. This all happens in a fraction of a second. So when you are running 1.35, your card is probably in the range of 1.4 before you can blink. GPU-Z will say otherwise the entire time.

So your card at 1.326 is probably around 1.375-1.38 actual going by TiN's measurements. That is why increasing your voltage isn't getting you anywhere over 1.326. You are already over it by a good margin and the heat load is overcoming your coolers abilities. I would personally back down the overvoltage a bit. Most likely the loss of a little clock speed will not be noticed and you won't stress the GPU nearly so much.

I hope this helps put you at ease a bit about the droop.
Edited by Deaf Jam - 3/1/14 at 7:13pm
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post #9890 of 21377
So Heaven stresses these cards more than Valley?

Also, I want to share my results with overclocking the memory on the Ti Classified. It honestly has barely any effect. This is with the latest Skyn3t bios w/ Boost disabled. Power Target at 100% and voltage left to default. I am not sure how the memory clock would affect FPS with power limit increased or voltage increased.

Base Memory Clock
FPS:70.7
Score:2957
Min FPS:28.9
Max FPS:134.6

+200 Memory Clock It seems like +200 is the sweet spot if you are going to try to OC. Notice the Minimum FPS takes a nice jump.
FPS:71.7
Score:3000
Min FPS:36.0
Max FPS:135.0

+300 Memory Clock
FPS:72.1
Score:3019
Min FPS:35.8
Max FPS:140.2

+400 Memory Clock
FPS:72.5
Score:3032
Min FPS:36.4
Max FPS:137.0
Edited by Kold - 3/1/14 at 7:40pm
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