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[Official] MSI GTX 680 Lightning Owners Club - Page 360

post #3591 of 7827
Quote:
Originally Posted by DJRamses View Post

New Afterburner 2.2.5 is out biggrin.gif

I'm on 2.2.3 still. If I go to 2.2.5 will I have to edit a config?
post #3592 of 7827
225 is stil as useless as 223 and 224. Still buggy
post #3593 of 7827
I'm a little disappointed with the overclocking ability so far. Even with max voltage, I can't get 1250 MHz core with ~1300 MHz boost clock. Since I've heard that you get better core overclocking with higher memory clocks, I pushed my memory to +400 to get ~6800 MHz. Any pointers you guys can give me? Do I just have a bad card? I've read through most of this thread, and people seem to be able to get anywhere from 1250-1300 MHz core clock easily on these things with unlocked voltages.
post #3594 of 7827
Quote:
Originally Posted by BigJoeGrizzly View Post

I'm a little disappointed with the overclocking ability so far. Even with max voltage, I can't get 1250 MHz core with ~1300 MHz boost clock. Since I've heard that you get better core overclocking with higher memory clocks, I pushed my memory to +400 to get ~6800 MHz. Any pointers you guys can give me? Do I just have a bad card? I've read through most of this thread, and people seem to be able to get anywhere from 1250-1300 MHz core clock easily on these things with unlocked voltages.

Just realized GPU-Z doesn't even read the clocks correctly, so I was actually overclocking the card WAY more than I thought. I'm going to try to focus on just the readings in Afterburner (2.2.3), and see if I can get better stability.
post #3595 of 7827
^you want to use the OSD to look at the clocks.
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post #3596 of 7827
What's a safe voltage for these cards on air? I'm able to get through about 1-2 passes of Heaven Benchmark with a 1293 MHz core and 7000 MHz memory clock at +62 mv on Afterburner. I know +100 mv gets to about 1.37 v, but I'm worried about getting too close to that number for fear of excess heat and potential GPU degradation.

(Update): Even with max voltage set to +100 mv, I'm not able to reach 1293MHz core/ 6800MHz memory stable. My fan profile is set so that my max speed reaches 70% in the benchmark, and my highest temperature is between ~58-63 degrees. I'm going to start slightly dropping my core and memory speeds, while maintaining the max voltage, to see what my max overclock is at max voltage.
Edited by BigJoeGrizzly - 10/31/12 at 1:21pm
post #3597 of 7827
Just finished hours of runs on Heaven Benchmark with max voltage (+100 mV) and 1280 MHz core/ 6800 MHz memory. It appears that it is the highest overclock I can get on this card with max voltage. That seems pretty bad correct? Most individuals have barely had to even adjust the LN2 BIOS voltage and they're getting 1300 MHz core easily. Is it possible that Nvidia's recent beta drivers are causing less overclocking potential for these cards? I obviously don't want to run max voltage on this card if I dont' have to, so I will be decreasing the voltage to see what my lowest voltage can be on the aforementioned clock settings. Any pointers would be much appreciated.
post #3598 of 7827
You guy know if using a 6 to 8 pin extension allows for the 8 pin lightning to pull enough power from the PSU or do I need a purely 8 pin extension?

I have a couple black NZXT extensions that I could use, but not sure if they would work.

Cable looks like this
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post #3599 of 7827
Can somone else confirm that lates Afterburner is buggy ??
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post #3600 of 7827
Quote:
Originally Posted by BigJoeGrizzly View Post

Just finished hours of runs on Heaven Benchmark with max voltage (+100 mV) and 1280 MHz core/ 6800 MHz memory. It appears that it is the highest overclock I can get on this card with max voltage. That seems pretty bad correct? Most individuals have barely had to even adjust the LN2 BIOS voltage and they're getting 1300 MHz core easily. Is it possible that Nvidia's recent beta drivers are causing less overclocking potential for these cards? I obviously don't want to run max voltage on this card if I dont' have to, so I will be decreasing the voltage to see what my lowest voltage can be on the aforementioned clock settings. Any pointers would be much appreciated.

~1280mhz is about the "new" average, sadly. Earlier cards were binned better it seems, even though the default LN2 BIOS clock remains 1202mhz. But yeah you got a locked card which means it wasn't one of the early ones. So, you don't have a 'bad' card by relative standards, you have a now-'average' card.

And the memory overclock being increased lowers the stable core overclock, not raises it. So you might be able to squeeze a few mhz more out of the core if you lower the memory overclock thumb.gif
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