thanks a lot for all the replies you guy. I read somewhere on here single core performance did not matter but Ill take your all's advice.
Yes, im trying to keep tower as far under $500 as possible Im only looking for medium framerates/ gameplay, if anyone out there loves trying to get a good budget build on pcpartspicker and could suggest one that would be great.
and as for the thermal paste Im a noob and was not aware it came pre applied lol