The thermal design for that chip is 72.7*C. Anything over that starts to degrade the life expectancy (MTBF). Higher and longer you go the quicker it will reach that point. You will probably only reach those temps during stress testing but if you want to be sure then just run the real temp during your most cpu intensive tasks for longer than you normally would and then just check them when your're done. If you want more performance out of the cooler you can get a higher cfm fan to go with it. It looks like your cooler has a variable speed fan on it. You might want to make sure it's running at full speed - turning off thermal control in bios or turn your fan controller to full if you have one. And of course make sure you have good air flow through the case. Pull off the side of your case and see if it runs cooler just by doing that.
At 3.8GHz you are running almost 1.2GHz over the standard clocks, a higher temperature is to be expected even with a better cooler. I wouldn't worry too much if you only reach those temps with stress testing.
I use the OC Profiles feature in Asus Enthusiast Mobos to set up separate OC profiles. A good 24/7 OC will have temps in the mid 50s (i.e. 920 @ 3.8 GHz) with a gaming profile which hits 72 at 4.0 - 4.2 GHz.
this is my first time doen this but some people seem to think that the cpu is made out of porcelain when it is the longest lasting part of the computer
most of the time its a power supply at around 5years that can and will kill everything or a bord at 5-10 years that will flop lol
its 25 years for the cpu and stock temps are all ways about 80, intel knows best so go crazy u still have 20deg to go
check out this site http://www.overclockers.com/forums/showthread.php?t=516...