This CPU i am buying is compatible with my MOBO i already checked , but as i'm going from a dual core to buying a quad core will i be able to use my current heatsink and fan that i use with my dual core. The reason i ask this is that the quad core that i am buying doesn't come with the heatsink/fan
Many thanks for helping me out, also will i need to remove the thermal paste of the heatsink and apply with new stuff when i fit the CPU?
Correct. In any case when the heatsink removed from any chip, be it GPU or CPU or any chip that actually employs heatsink, one must also change the thermal compound. If you insist not to, a bubble should be expected and some serious heat by near future, threatening the lifespan of the chip.