A10-5800k overheating problem

Hya,

Just recently I have build a HTPC with AMD a10-5800k and with big shuriken 2.
but it looks like it is overheating... 74C !?!?.. I opened case, everything looks alright.. Is there anything I could ?
screenshot of prime95 and cpuid attached is here -> http://imgur.com/IJfUU

thanks
siulas