No. Core 2 is on a different socket type. The i3 will not fit into the core 2 socket, and vice versa.
Socket 775 (also known as LGA 775 or Socket T) is a socket for certain versions of the Intel Pentium 4, Celeron, Pentium D, Core Solo, Core Duo, Core 2 Duo, and Core 2 Quad. Unlike a traditional "socket", Socket 775 does not have any pinholes. instead, the pins are on the motherboard and reach up to contact the flat surface of the processor. Socket 775 was superseded by LGA 1156, but is still in common usage by most mainstream Core 2 Duo systems (as of January, 2010).
The E6600 uses LGA775.
Core 2 duo is dual core. And before that was core duo which was dual core too...
Yes, both fit in the PGA 478 socket. SeanHolshouser
The Intel Core 2 Duo E8500 Dual-Core Processor fits in an motherboard with a socket type of LGA 775. If you are purchasing a motherboard for this type of CPU, make sure you purchase a CPU that clearly indicates that it is for Intel processors with a socket type of LGA 775.
core 2 duo will be better.
Core 2 Duo
The Intel Core Duo.
An LGA 775 socket motherboard (desktop)
There is no difference between dual core and core 2 duo. Intel just name its recent family of dual core processors as "core 2 duo". Both (core 2 duo and dual core) works in same fashion.
the Intel core 2 quad