Database on 6.1/AMD64 ?

[Hugo Silva]

Hi list,

I'm considering switching a database server to FreeBSD 6.1/AMD64. The 
Opteron processor I am interested in is a dual core.

I would like to know about any stories using FreeBSD/AMD64, MySQL 5.0, 
and two dual core processors. Will I have stability/performance issues ? 
Will the two dual cores kick ass, or will they give me trouble ?

Any insight into this matter would be most useful. Thanks!