I would recommend that anyone doing this test do it only 5 runs. It apparently puts a lot of pressure on your capacitors. I had 3 motherboards fail (2 MSI Neo's and 1 Intel EE board) after running an overnight stress test. I had thought that it was something else, but now I am beginning to think that maybe running this application in an overclocked environment for a long time could be the culprit. Best to stay prudent and run it a few runs only. It usually can find if your system is not 100% stable within the 5 runs anyway.