If those temps are accurate and under full load, they are great. and your voltage looks good too.
What program did you use to load test and get those temps?
prime 95 , the program used for temps is ecs software (come on the driver cd with board) its pretty acurate cause i rebooted and checked bios the temps were the same
iam using stock cooler with ac @22c and blowing at my rig with side panel removed
*next thing to do is try to lower the voltage (less heat right ?) @4ghz ~4.2
*the cpu speed isnt constatnt is that normal ??