I'll make this as brief as possible. Over a year ago, I updated my mobo to the Gigabyte 890FXA-UD5. I had 4 GB of DDR3 1333 RAM with timings at 9-9-9-24. I also got a 1090t CPU at the same time. Everything worked great, except occasionally I would get a temporary lock up followed by the "Display Driver has stopped responding, but recovered blah blah" error. This would happen in 3D games mainly. After some research, I ended up RMAing my gfx card (HD 5870) thinking that had to be the problem. Nothing was wrong with it. After much more research, I learned that RAM could be causing this problem, so I toyed with my RAM settings, and discovered that the system is stable when I change the timings to 10-10-10-24. I just went straight to 10-10-10 and didn't try anything else, but it worked. I am a fan of overclocking, so you can imagine how this bugs the hell out of me. My 1090t is OC'd @ 4ghz stable, and my HD 5870 @ 940Mhz. I want to OC my RAM, but this ridiculous issue is forcing me to underclock the timings! I recently upgraded to 12 GB of RAM using the same RAM as my previous 4GB. Does anybody have any idea what could be causing this, because I still haven't found a reasonable answer. And perhaps someone has an alternative fix? Maybe I need to play with some voltages? (I played with my RAM voltages, but it didn't work. I went up to 1.6v using the standard 1333 speed and timings.) Perhaps one of you here are the savior I've so desperately needed for over a year!