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[Official] MSI GTX 680 Lightning Owners Club - Page 647

post #6461 of 7827
Quote:
Originally Posted by Ali Man View Post

It has dual bios man, one is voltage locked I.e. 7A, and the other is unlocked which is 8A. The volts do increase, but its not a good over clocker.

Whats ur ASIC? mine is 70,3 and needs allot of juice for example, but gets hot easly ofc.
post #6462 of 7827
Quote:
Originally Posted by phazers View Post

Whats ur ASIC? mine is 70,3 and needs allot of juice for example, but gets hot easly ofc.

Of course, more juice means more heat which leads to less stability even under water.
Edited by Ali Man - 3/25/13 at 3:12pm
post #6463 of 7827
Quote:
Originally Posted by Ali Man View Post

It has dual bios man, one is voltage locked I.e. 7A, and the other is unlocked which is 8A. The volts do increase, but its not a good over clocker.

What do you mean by 8A? The 80.04.47.00.19 and 80.04.29.00.3A Lightning BIOS are locked LN2. They do supply more voltage than the default BIOS, but not as much as the unlocked ones. 80.04.28.00.3A is the most recent unlocked LN2. It will allow more voltage than the other two. That is, the slider in AB will correspond to a higher real-world voltage offset.

Quote:
Originally Posted by driftingforlife View Post

AB does not read it right.

Voltage table:

AB 2.2.3, 3A LN2 BIOS.

Stock - 1.250
+6 - 1.258
+12 - 1.263
+18 - 1.273
+25 - 1.280
+31 - 1.285
+37 - 1.295
+43 - 1.300
+50 - 1.308
+56 - 1.313
+62 - 1.319
+68 - 1.325
+75 - 1.332
+81 - 1.338
+87 - 1.345
+93 - 1.356

Thank you. I'm grateful for that.

Quote:
Originally Posted by phazers View Post

Hi all,

I've got an question that is going through my mind, about my power supply i've got an OCZ StealthXStream OCZ600SXS 600W. but I'm starting to think this power supply isn't powerfull enough based on the 12V 18A. i've heard somebody say in this thread that I need atleast 38A? is that correct? playing with the overclocking and such with voltage, on the memory for example @ 150mv, with artmoney, but get constant restart and display driver crash( well more a black screen crash)

Anyway, I'm thinking of buying a new one, based on the specifications, leaning towards an Corsair 760I but nothing is certain yet.

Everyone likes to blame the PSU. Try to refine your settings before spending heaps of money on a new one.

If I understand correctly, you're using +150mv on the memory? If so, you are seriously overvolting it. In my (admittedly limited) experience, stock or -50mv work best. I have never heard anyone say that going beyond +10mv on the mem gives any benefit. Try this and see if it helps: drop your aux to -100mv, and keep your mem at stock voltage.

550w is nvidia's published minimum for the reference 680. There will always be headroom in a spec like that. MSI does not say clearly whether the Lightning needs more. If it does, then forums would likely be full of people complaining that 600w is not enough for a single Lightning. However, it is kinda close to the minimum.
post #6464 of 7827
Quote:
Originally Posted by wiredg View Post

What do you mean by 8A? The 80.04.47.00.19 and 80.04.29.00.3A Lightning BIOS are locked LN2. They do supply more voltage than the default BIOS, but not as much as the unlocked ones. 80.04.28.00.3A is the most recent unlocked LN2. It will allow more voltage than the other two. That is, the slider in AB will correspond to a higher real-world voltage offset.

Sorry, I meant F7 and F8 bioses.
post #6465 of 7827
after some fine tuning, new clocks and new results smile.gif

gpu +235 mhz
mem +800mhz

3dmark11: 12760 ( graphics score 13251 !!! )




3dmarkvantage: 48198 !!!


post #6466 of 7827
Does aux voltage increase or decrease stability ? when should it be used?
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post #6467 of 7827
Quote:
Originally Posted by sockpirate View Post

Does aux voltage increase or decrease stability ? when should it be used?

Aux Voltage is like a PLL Voltage and it does give a better chance at stability.
post #6468 of 7827
Quote:
Originally Posted by phazers View Post

Whats ur ASIC? mine is 70,3 and needs allot of juice for example, but gets hot easly ofc.

It says 81.6%
post #6469 of 7827
Any of you tru the new whql drivers yet? Curious if they fixed the core clock issues that were
Present in the 314 beta drivers. Not home at the moment
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post #6470 of 7827
Quote:
Originally Posted by gl0ry View Post

Any of you tru the new whql drivers yet? Curious if they fixed the core clock issues that were
Present in the 314 beta drivers. Not home at the moment

No, I don't think they've properly fixed it in the 314.22 WHQL's. My Lightning on the 3A LN2 BIOS seem to get stuck at 1006mhz on the core at start-up. I am only able to 'fix' this so that it boosts as normal again, if I manually apply the OC by resetting AB and redoing all the voltage and clocks.

Note that this behavior didn't happen when I was running on the 310.70 drivers with +170 on the core, so it couldn't have been my card.

It just doesn't go any higher than 1006mhz if I do something in AB. I have tried completely re-installing the drivers, yet I need to manually apply the OC everytime after startup, if I am to keep the overclock. So right now, I just booted into windows with my usual +160 on the core clock, and had to reset AB and redo it all, just so I can stop my card from being stuck at 1006mhz.
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