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[Official] MSI GTX 680 Lightning Owners Club - Page 506

post #5051 of 7827
Quote:
Originally Posted by dph314 View Post

Were both cards flashed to the LN2 BIOS?
Did you sync the cards at those settings? If you did, you might have to un-sync them and drop that core clock on the top one to match the bottom (dropping voltage too, of course). Same issue with me. I have one good card and one not-so-great one. I don't OC in SLI often, but when I do, the bottom card needs a good bit of added voltage to hit 1300mhz, and the top one does 1300mhz on the stock voltage. So I set things up for both cards individually instead of sync'ing them because of their varying capability levels.

So, being in the same boat, having 2 cards with considerably different silicon, I'd just go to the 1st and 2nd card's settings individually. Run the max clocks/voltage you can hit on the 2nd card, and then set the top card accordingly to match. Top card will need less voltage than +93mv to hit the bottom card's max speed, so set them individually so you're not creating unnecessary heat.

Yes i did flash both cards, although thinking about it now, i flashed the cards while the LN2 bios button was flicked over, does this matter? Should i have the cards set at normal bios, then flash, then flip the switch over to LN2? I am on 3A.

Hydroplane: Those are just Bitfenix Alchemy 8 pin PIC-E extentions, should be easy to get, i got them from a shop in Australia.
    
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post #5052 of 7827
Why have you set -50 AUX voltage?
post #5053 of 7827
Read up on a few forums users have reported better stability be reducing the AUX voltage
I seem to remember when i tried it, that it helped.
    
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post #5054 of 7827
Seems like i wasnt very lucky with my lightning.

Got it few days ago and yesterday started to do some testing, it has locked bios versions and so on so far only 1.175v

At stock it has boost of 1228mhz with both bios versions & max it seems to get past benchmarks without artifacts/crashing are +85/1306mhz, ram i just throwed to +300 and havetn tested that more yet.

How much added voltage helps with overcloking these? Just wondering if its worth to flash unlocked bios.
Edited by johnnyw - 1/18/13 at 1:42am
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post #5055 of 7827
heck yes it is worth flashing.
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post #5056 of 7827
Quote:
Originally Posted by StreekG View Post

Read up on a few forums users have reported better stability be reducing the AUX voltage
I seem to remember when i tried it, that it helped.

FWIW I have mine at +50. Lowering it on my card decreases stability.
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post #5057 of 7827
For my single 680L 3dmark 11 run at 1502mhz core I had AUX at -50mV.

Still not 100% sure if AUX does anything :S
post #5058 of 7827
Just did a quick test. Stock mine locks fast at a known unstable OC, -50mv is locks less fast, -100 it starts lightly artifacting before crashing to desktop. Haven't tried increasing it.
post #5059 of 7827
Quote:
Originally Posted by MightyUnit View Post

heck yes it is worth flashing.
Ok, well need to consider it if it gets considerable boost to clocks with added volts. Im just not big fan of updating bios to gfx card, pretty bad memories from vbios flash gone wrong few years ago with GTX580 and after that havetn really dared to try it.

My card has these bios versions:

NonLN2 : 80.04.47.00.18

LN2 : 80.04.47.00.19
Edited by johnnyw - 1/18/13 at 1:50am
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post #5060 of 7827

R: [Official] MSI GTX 680 Lightning Owners Club

Quote:
Originally Posted by CryptiK View Post

Just did a quick test. Stock mine locks fast at a known unstable OC, -50mv is locks less fast, -100 it starts lightly artifacting before crashing to desktop. Haven't tried increasing it.

This is about aux voltage?
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