Well, ive come to the final conclusions about my 780 Lightning:
For 1200MHz to be stable, I need at least +100mV
Ive gone as high as 1370MHz, but needed like... +350 or 370mV? Temps were in the mid 80's at 80% fan. This did not help my Valley score AT ALL
I cannot overclock the Memory Clock. Even a small increase causes valley and any other benchmark to crash
Increasing my Memory or AUX voltage causes all benchmarks to crash. Sometimes, even applying a voltage increase causes the driver to crash and reverts back to stock.
The highest volts ive seen on the card is 1.45v if AB is correct
PCB/Memory/VRM temps were all under 70c
Power Limit at 300% only seems to allow 120%, but a few times I was able to see 140-150% at more extreme voltages
I tried to do 3D mark with the card, but higher voltages wont let me run the program

@1370MHz
This post was edited by Azenor on Dec 30 2013 04:15pm