I think I might have a good idea why my rig crashed. Since then, it has crashed a few more times. I have noticed that it only does it when working on the 768pt wu's. I also have noticed that they stress the gpu more since temp increases when working on them.
Going from an 1888 to a 768, temp immediately went from a constant 40Â°c to 44Â°c and slowly climbed upto 45Â°c. I'm thinking that it has to do with gpu temp and possibly the shaders become unstable at a little higher temp. I know 44Â°c isn't a lot, but everyone says that the shaders are very sensible to temp. Since I have them overclocked fairly high, the increase in temp might make them unstable?
This could be a result of having a 80Â°F ambient temp in my room. When I did all of my preliminary testing, it was around 68Â°F in my room. Just a few minutes ago I turned the AC on in my house and gpu temp dropped to 40Â°c in a matter of minutes.
I'm probably going to drop the core and memory clocks a bit to reduce heat if this continues to occur. There really is no need to have them clocked that high 24/7, but it makes me feel good knowing that I can.