64 bit CPU issue

[vyaw2003]

Hello,
I was interested in buying a new pc. Not to be outdated in 1 year, i
thought maybe a 64 bit chip would be the way to go.
Intel dont have many and they dont have a dual core chip. Should i be
looking at AMD 64 bit dual core chips? How do they perform? The
prices are very reasonable.
If i was doing some heavy number crunching on a 2.4ghz 32 bit, and the
same process on a 2.4ghz 64 bit, which would be quickest?
Thanks

 

[vyaw2003]

and will Vista be 32 bit and 64 bit?

 

[DaveW]

Wrong. ALL of the Intel Core 2 Duo CPU's are 64 bit.