The should not be run over over 95C for long periods of time. but you are VERY far from that. Considering you have a good cooler, there is no reason that when you get more comfortable that you do not OC to 4GHz.
May I suggest that you buy a SSD for your OS? the WD10EARS is not really designed to be an OS drive, but more of a storage drive. An OS drive doesn't have to be more than 40~64GB, and would cost 100~120$. This is not needed, but will help balance out your system.
What is your Graphics card?
If you do Video encoding, CPU, GPU AND RAM can be important. CPUs are the longest lasting components in your computer, and 4GHZ at 1.24~1.28V is pretty damn safe since
intel says
1.375V is safe. The 1.6V you see on your RAM's packaging is the voltage it says it requires for the XMP profile. going up to 1.75V is safe on X58, as long as you keep your VTT voltage within 0.5V of your RAM voltage
The i7 920 is my specialty, as I have studied it and read about it since Jan 09 when I joined, and I have played with it (OC etcetera) since August 2010. I love helping people with this platform.
That said I gtg teach my class so please don't be afraid to PM me with questions, post in this thread, or e-mail me (click the little blue guy on top of system specs)
Also, there is a
Thanks button on the bottom right of each of my posts. If you want to thank me, just press that button