thank you guys. These were all good responses, I will try intel burn test! but like some of you said, you may fail prime but you games run fine, that is my case. I ran prime, and it failed after 1hr30mins but I continued to use the same OC without bumping up anything and I been running my game perfectly fine, not issues.
I will also let you guys choose the answer!
So is it safe to fail prime but have your games (bf4, arma 3) work or do i need to stablize the system.