Thanks for all the answer
turn out the main problem is the store which i bought my pc forgot to add thermal paste.
now after i add a thermal paste (no brand but it still ok for normal proc without OC) the temp drop down to 39-40 on idle and max load only 61C
i confused which answer should i choose as my best answer but since at first i though my problem was in PSU then perhaps the one who helped me a lot so i can pick a good CPU is the best answer.
no hard feeling for the others okay
thanks again for this forum and all its member who helped me.