Hey I'm having some issues overclocking my 680 lightning. The card has been run stock for around a year now, I'm just looking juice it up a bit for gaming (gw2 wvw, and maybe some bf4). I have a ax1200i psu, h100 cooled i7 3770K (stock), 16gbs mem,p8z77vpro mb.
I am currently using driver 327.23, version 2.3.1 msi afterburner, running heaven 4.0 basic as a benchmark and using gpu-z 0.7.3.
LN1(80.04.28.00.39) and LN2(80.04.28.00.3A) bios (never flashed)
I go into msi afterburner, increase the core clock slightly , just to get 15 or 20 MHZ on the boost clock and then apply the settings . I verify changes on GPU-Z and then click run on heaven.. Before I run the benchmark test the screen will flick black for a few seconds (no artifacts or any warnings,temps are great) and then continue running heaven, with the options to run benchmark etc just like before the black screen....but it resets my clocks during this blackout, so there's no point of running the bench mark lol. Sometimes this happens 5 or so seconds into the cinematic scene , others it can take a 20 or more.
Ive tried this on both bio versions, tried increasing power limit and voltage slightly ..to see if that would stop the black out/ reset lol.. but no luck.
When I run heaven with stock clocks, this does not happen. And i can run the benchmark test without any issues.
Yeaaa lol, this is my first time overclocking so apologies if I'm all over the road, my brains fried from reading all day lol.
Hope its not a big deal, love the card and the idea of OCing it, not to obtain crazy numbers, just to improve performance while keeping stability!
Thanks for any info!