Originally Posted by posh rat in hell

The Intel Core Duo (code name: Yonah) is not 64 bit. Intel's 64 bit dual core processor is not yet released, and is under the code name Merom.

64 bit only helps if you have to process very large numbers (something that only scientists using supercomputers woudl realy have a need for), or if you need to be able to address more than 4GB of ram at once (servers may have a need for this).

Dual core is much more important for the average user...

Also, the big benefit on the Intel Core Duo is performance per watt. The CPU draws only a little more than the Pentium M processor, and is much faster than say the Pentium 4 (which draws much more power).