Yes. Ran it under fail safe settings first and got a 2 errors (1333) then set it to the XMP and got a boat load. The first set that I sent back was doing the same on my GB X58 board. The replacement set for that grouping of three was and is running fine at 1600 now. The additional set just starting doing this on the Z68 (sig) a few weeks ago. Had been fine for a year prior. I have some G.Skill in my main HTPC and it has been nothing but perfect.
On my old 680i board, when I populated all four slots I had to bump up the juice a bit or I would not be able to boot the board. That was never the case on the X58 board. I would set the XMP then leave the voltage at Auto. Using GB's software, I did notice the memory was running just a small fraction above 1.5 - usually 1.515 or 2 something. For the Z68 I took two sets of matching pairs and plugged them in. Everything ran fine until the BSOD's. I should have mentioned I did do tests with one stick at a time but for only a few hours. Three were clean, one threw errors.
The G.Skill is great stuff. About the only consistent thing that comes to mind with both sticks is they were in machines that I turned completely on and off everyday. Would that have played a part? The GB x58 with the first replacement sticks runs 24/7.
