FreeBSD on Intel Xeon processor 5160

[Metias Adel]

Dear Sir,
   I have IBM x3550 server with Intel Xeon (Dual-Core) processors 5160 @ 
3.0 GHz. I need to install FreeBSD 7.0 but I do not know which type of 
FreeBSD I have to use to take the best performance of the EM64T and 
Hyperthreading Technologies. Thank you in advance.

Best regards,
Metias
Network and System Administrator
Armanious Group