2x opteron single core or 1xdual core CPU server for Oracle?

Hello

I need to size the Opteron based server for Oracle. Oracle will be implemented on Windows 2003. What solution is better?:
server with two single core CPUs or
server with one dual core CPU.
(the same clock rate).

In case I will choose two single core CPU which OS is better: Windows server 2003 64 bit or 32bit version? Received on Sat Dec 17 2005 - 04:27:02 CST