I just bought a Phenom II X2 550 Black processor and realized I already had a dual core processor, the x2 4200+. Besides going from 2.2 to 3.1 Ghz, is there a big jump? By going from 3gb of 400 DDR2 to 4gb of 1333 DDR3 and from the 4200 to the 550 am I really going to see a large difference?