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EVGA GTX 680 Classified Overclocking Question

post #1 of 7
Thread Starter 
Hi guys, I just recently received a EVGA GTX 680 Classified last week. Some awesome dude wanted to trade me his 4GB Classified for my 2GB Signature edition so I couldn't refuse.

Now, I've been trying a bit of over clocking with it using PrecisionX. I've seen much stories where people will be reaching 1300mhz clocks no problem on stock air cooling and I thought that I would give it a try. I followed the master GTX 670 overcloking guide (awesome guide btw, reason why I joined this forum in the first place is because of the amazing support and advice) but the only clocks I could muster was 1250mhz (+74 offset) and +112 offset on the memory clock with voltage tuned up to the "max" 1.175v and power target at 113%. I'm still learning what people mean by "I have over clocked my memory to 6xxx" so if maybe someone could clarify that for me too? tongue.gif. After that, adding +1 to any of the memory or clock speed will crash the Heaven benchmark. I know that cooling can't be the problem because even at 44% fan speed the temps don't exceed 60 degrees celcius. Although, with just 100% and stock voltage my over clock still runs as smooth as butter with no artifacts or anything.

Now, I just want to know if that's normal. I really want to hit that 1300mhz mark if there's a way. Maybe the classified I got was just a bad card? I'm not complaining, as it was pretty much a free upgrade (my old signature 680 couldn't even get past 1220mhz) but it would be nice to play BF4 with a few more FPS. smile.gif

If it helps, my current driver is at the latest from NVIDIA. (331.65)

Any advice or suggestions will be greatly appreciated!
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post #2 of 7
If you didn't know this already, there is an EVGA Classified voltage tool for Kepler EVGA Classified edition cards that allows some voltage tuning.

You can now have up to 1.35v in software for the core using it.

Classified.zip 182k .zip file
post #3 of 7
Thread Starter 
Quote:
Originally Posted by MrTOOSHORT View Post

If you didn't know this already, there is an EVGA Classified voltage tool for Kepler EVGA Classified edition cards that allows some voltage tuning.

You can now have up to 1.35v in software for the core using it.

Classified.zip 182k .zip file
Isn't that dangerous though? And will increasing the voltage increase my over clocking performance/stability?
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post #4 of 7
Quote:
Originally Posted by fredocini View Post

Isn't that dangerous though? And will increasing the voltage increase my over clocking performance/stability?

Not dangerous with your card. Robust pcb and power delivery. Just have to control the heat.

Increased voltage can increase stability while overclocking.
post #5 of 7
Thread Starter 
Quote:
Originally Posted by MrTOOSHORT View Post

Not dangerous with your card. Robust pcb and power delivery. Just have to control the heat.

Increased voltage can increase stability while overclocking.
Wow, now I feel completely stupid that it was that easy. Thank you so much for that program! I am now gaming with +124 on core clock (1306) and +700 on memory clock on 1.24v. Temps are ~65 degrees celcius at full load. I am very satisfied. Appreciate the help smile.gif
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post #6 of 7
did you notice performance increase?
post #7 of 7
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Quote:
Originally Posted by Nightfallx View Post

did you notice performance increase?
Yes I did! I used the heaven benchmark. I had a score of 946 in heaven at factory overclock. After my overclock my score increased to 1100. Noticed a good fps jump in BF4 as well and I RARELY ever go below 60fps (Only in campaign during intense areas would I go under). With multiplayer although, I have yet to go below 60fps so I am very satisfied!
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