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[Official] MSI GTX 680 Lightning Owners Club - Page 646

post #6451 of 7827
So is it concluded that AUX Voltage decreases or increases OC potential ?
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post #6452 of 7827
Quote:
Originally Posted by Ali Man View Post

So I got my 680 Lightning yesterday in hopes to overclock it at least above 1346Mhz, but the best it does it 1333Mhz and that also after a lot of voltage pumped. Crashes each time on 1346 even at 1.306V. And all the time the temps were touching 60C. And this was all under water.

My other reference 680 does 1333 @ 1.212V without crashing. Have even benched once at 1346Mhz and temps never broke 43C.

Planning to get rid of this lightning.

You are measuring with a DMM right?
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post #6453 of 7827
Quote:
Originally Posted by steelsix View Post

Yep, I even pulled the cooler on both for a look, everything the same.

Nice, they must have changed the design. I bet that an EK block would fit. biggrin.gif
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post #6454 of 7827
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.
post #6455 of 7827
Quote:
Originally Posted by driftingforlife View Post

You are measuring with a DMM right?

Just through after burner.
post #6456 of 7827
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
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post #6457 of 7827
I'm using 8A, the one that came with it. Any difference?
post #6458 of 7827
Quote:
Originally Posted by Ali Man View Post

I'm using 8A, the one that came with it. Any difference?
Yes, the one that came out is locked, exact same number but you won't be able to control voltage.
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post #6459 of 7827
Quote:
Originally Posted by Kimir View Post

Yes, the one that came out is locked, exact same number but you won't be able to control voltage.

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.
post #6460 of 7827
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.

Nobody with any knowledge?

The specification sheet tells me this +12V1@18A, +12V2@18A, +12V3@18A, +12V4@18A, -12V@0.5A what do I make of this? a total of: 72,5A? for the 12 lane? if so this should be more then enough for an lighting that comsumes about 38A max right?

I'm not so knowledgeable when it comes down to power supplys, not really my cup of tea. I know the corsair is good, but it's an expensive purchase.
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