ok, well,, ,thats really warm.
new CPUS really need good cooling. If you only have 2 case fans, this may be a bit of an issue. my spare machine only has 2 case fans, and if i do any sort of gaming etc,, it gets warm, doesn't shut down, but gets warm.
now, since you only have a dual core CPU, i wonder if there isnt somthing else going on as well.. is the CPU cooler working correctly? usually they spin around 2000 RPM. what does it spin at according to the BIOS?
without seeing your set up, and being hands on... it is hard for me to give you a " this is your issue" type answer. my guess, its a combo of a few things, adding up to over heating.
my first dual core resulted in me getting an aftermarket CPU cooler as i was getting over heat alarms.