64bit FreeBSD performance

[Derrick Edwards]

 	All,
I purchased a amd anthlon 64 3700 (754) to be used with VMWARE 5.5. FreeBSD 
was going to be the guest OS. It seems that VMWARE only works with amd 64 bit 
(939). I was wondering if the performance gain of FreeBSD 64 bit really be 
significant compared to 32bit FreeBSD. I was also wondering if all the ports 
for FreeBSD 64 running as 64 bit applications. If the  performance is minimal 
then I will not go through the hassle of sending stuff back.
v/r
Derrick