Well if it fails say 12 hrs or beyond ..... don't worry about it as i usually only do 12hrs, but i figure for fun i run longer this chip and i am 13hrs and 46mins right now on it.
Don't panic or throwaround if it fails in less then 12hrs.... me figure it out for you... usually rounding error = CPU volts or Ram timings and if you get a EXAMPLE: Error = AEB666 was expecting 455455HH error or anything like that ... usually means RAM voltage.
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