Question : Problem: Question on Intel's Core 2 Duo

Is the Intel Core 2 Duo a 64-bit architecture?

Answer : Problem: Question on Intel's Core 2 Duo

yes.

http://en.wikipedia.org/wiki/Core_2_duo

" Instruction set:  x86, MMX, SSE, SSE2, SSE3, SSSE3, x86-64, SSE4.1 (SSE4.1 is for Penryn, Wolfdale, and Yorkfield-based processors only) "