Unlocking the 780 Lightning

[Phixsator]

So ive got myself a msi 780 lightning and i want to oc it, i mean why else buy a lightning right? So i flipped the bios switch and put it in LN2 mode or whatever. Now its suppose to be able go crazy now right? WROOONG.. still that lame 62mv power limit in afterburner.

So my questions are as follows:
1) how do i get around that core voltage 62mv limit
2) is it even necessary to give it more than 62mv on an average sample to get to 1200mhz+
3) What is Aux Voltage for? and how does it apply to ocing this bad boy?
4) What would be a 99% sure OC for a lightning card to achieve?

 

[pgi947]

You can either use the lightning edition afterburner or one of the many voltage hacks (rbbys tool is great for lightnings!)

Aux is pci lane voltage iirc

On air you should manage 1250-1300 easily

 

[Phixsator]

You can either use the lightning edition afterburner or one of the many voltage hacks (rbbys tool is great for lightnings!)

Aux is pci lane voltage iirc

On air you should manage 1250-1300 easily

Thank you for that.. Didnt know there was a SE version of afterburner. The limit though is still a bit of a dissappointment (the 100mv instead of the normal 62)but i guess it does give more headroom.

Would love it if someone could do me a favor and confirm my suspicion by benching bioshock infinite using a single 780(or similar) and an intel cpu 3570k or better and tell me if their GPU usage would drop around 50% during the bench. Its important that the gpu core is set to 1000mhz. I think my 8350@4,8ghz is holding this card back in a big way.

 

[alex_123_fra]

Thank you for that.. Didnt know there was a SE version of afterburner. The limit though is still a bit of a dissappointment (the 100mv instead of the normal 62)but i guess it does give more headroom.

Would love it if someone could do me a favor and confirm my suspicion by benching bioshock infinite using a single 780(or similar) and an intel cpu 3570k or better and tell me if their GPU usage would drop around 50% during the bench. Its important that the gpu core is set to 1000mhz. I think my 8350@4,8ghz is holding this card back in a big way.

You can find this out yourself. Test the bench using various clocks such as 4.6, 4.8 and 5 GHz. Then compare your mins, max and average fps and also GPU usage.

Don't know much about bioshock infinite but doubt a single 780 of any kind will bottleneck a properly overclocked 8350 in a game that uses 4+ threads. 2 x 780s is a different story

 

[Phixsator]

You can find this out yourself. Test the bench using various clocks such as 4.6, 4.8 and 5 GHz. Then compare your mins, max and average fps and also GPU usage.

Don't know much about bioshock infinite but doubt a single 780 of any kind will bottleneck a properly overclocked 8350 in a game that uses 4+ threads. 2 x 780s is a different story

Wont give me the results i am after. I want to see what difference an intel cpu would do.,

 

[almighty15]

I BIOS flashed my 780 and it now has 1.212v and it FLIESSSSSSSSS...... It's as simple as flashing the BIOS...

EDIT; Just run Bioshock Infinite benchmark and my 780 at 1Ghz was pegged at 98% throughout the whole thing.