Got my Lightning now for a week or so, but i must say i'm very disappointed with its overclock results. Paying extra for cards with special quality components and settings basically, but getting less than what probably a normal gtx 680 would do
My card does around 1325-1335MHz on the gpu (which is not super bad but my goal of 1350MHz will simply crash over and over) and MAX 6500MHz on the memory(6600MHz works but will give crappy performance in Heaven, plus very very subtle artifacts after a while in GW2) with bios1 with;
93+ mV on the core
133% Power Limit
Been trying everything to get it higher but it simply won't be stable. My memory absolutely hates ANY extra voltage at all and will make it artifact even quicker, even playing with aux voltage doesn't seem to do anything. But then i got some hope again because someone mentioned not being able to do much on bios 1, but bios2 was a world of difference.
Didn't really wanted to toy with that since i bought this card for gaming and not benchmarking at all, but i decided to give it a shot. After all, (my personal goal of) 1350/6900-7000 was not that hard to achieve for most of you.
Basically nothing changes at all, even putting the Power Limit on 300% and everything else on max (+50mV on the core though) will not make much difference.
My Memory just flat won't go any further than 6600 without giving artifacts, even with more voltage and the higher power limit. Tried everything basically, even giving it - voltage but without succes.
And what's weird as well; +300% Power Limit alone (so without extra voltage) just does nothing at all for either memory or the GPU clocks. The GPU just needs at least that +50mV to not crash on 1325MHz.
The core i haven't tried much higher since i thought +25MHz won't be that much of a difference, i just need the memory to go higher.
I knew i should have kept that other card that did 1325 on the core with +50mV and 6900MHz on the memory without any extra voltage at all (bios1)... too bad the box was opened, that's why i sent it back for a new one.So guys, is this normal or do i just have a crappy card?
3th MSI for me that just doesn't overclock well at all (had 2x 6950's), think i'll be looking at a different brand next time.Edited by qwaz - 8/29/12 at 11:46am