I have a Dell Inspiron 546 with a 0F896N motherboard, Athlon II x2 215 CPU. The chipset is 780G. My Athlon that I have now is an AM3 Socket in an AM2 socket motherboard. I was wondering if i can put a Phenom II X4 955 95W or Phenom II X4 960T 95W in my PC. If i can do both which one? Im leaning towards the 960T for overclocking, but if i cant OC because of my motherboard then i'll go with the 955 95W. If i cant use the above mentioned CPUs then what is the best CPU upgrade that i can get?