Should i buy a new cpu cooler based on these results?

Usernam3

Honorable
Apr 12, 2013
21
0
10,510
Whenever i play minecraft, my computer eventaully freezes in terms of dropping fps to 0-5 even with best performance options through optifine, and nvidia control panel. In this picture, i am running steam downloading a game, chrome, and minecraft. I really need to know what causes minecraft to freeze and if i should buy a cpu cooler for my factory built hp p6620f which was upgraded with a 750w psu and gt 640 gpu.

LINK BELOW

http://
 

Usernam3

Honorable
Apr 12, 2013
21
0
10,510




click the link httpp in the ooriginal post