Ok I have been out and chilled out a bit so I will try again.
Your cpu is not working to its full potential. This is either because the cpu is faulty , the motherbaord is not supplying adequate power or your cooling is not adequate to keep it under its tmax so it throttles. Some of these things we can test and some we cannot.
Now I have asked for a picture of the cooler so we have more of an idea whether it is upto the task. Your cpu is a 165w sku so it needs good cooling or it will throttle. If you cannot let us see a pic then a name/model number/invoice will let us know what it is.
Hwmonitor , download and install then run Cinebench R23. Run Hwmonitor and check temps and Mhz of the cpu cores whilst the R23 benchmark is running. If the temp is locked to 94c whilst the cpu cores are only at 3ghz( I do not know off the top of my head what the all core boost of that cpu should be , I was estimating with 3ghz) then you have an answer, insufficient cooling. If that is not the case then the problem may be elsewhere.
The bottom line is that you are only getting 60% of the performance your cpu is capable of, 80% in single thread.