Posting to see if it's just my luck.  I've had one machine replacement and 2 additional RAM failures in less than a year.  XPS 720 H2C w/4gig, Over Clocked with dual 8900 Ultra's.  So there is no question that i generate heat, but the failures have all happened the exact same way.  Machine is operating normally, and I decide for what ever reason to turn it off [standard is it remains up 24x7].  I come in teh next day and i get 1-3-2 beep code and lights 3 and 4 lit.  The first time I had other issues [Video card failed, would not reboot due to USB issues, seems if I have a 7port hub on the old and new box it hangs at the windows boot] and had the entire box replaced.  3 months after that, same thing, DIMM's 2 and 4 both failed.  Replaced those two and 3 months after that repeat.

I cruised the forms and only found one other instance that looked to be similar.  With two machines behaving the exact same way [both the USB issue and the RAM failure], I just have a hard time believing i'm the only guy on the planet that has the issue.  I keep nTune running to monitor temps and they have all been comparable to others who posted.  Current temps 29c CPU; 29c System; 77c GPU1; 66c GPU2.  CPU and System fains running between 1420 and 1490.  Outside temp 76f.

any feedback would be appreciated.