You dont even know what your trying to sell. LOL>
Theres no such thing as a 1.83ghz C2D, or a 667fsb core 2 duo, Or a socket 478 C2D. ROFL
Yes, there are. Remember that there are mobile Core 2 Duos as well as the desktop units. These chips have either a 533 MHz, 667 MHz, or 800 MHz FSB.
Intel's mobile CPUs since the Pentium 4 era use a 478-pin socket or a 479-ball BGA interface. The first iteration of the 478-pin socket in Intel mobile chips actually *was* the same Socket 478 seen on desktops. The next 478-pin socket was Socket 479 and it is not pin or electrically-compatible with Socket 478, such as how Socket AM2 and Socket 940 are not compatible even though both have 940 pins. The third 478-pin socket was Socket M, followed by the also 478-pin Socket P.