hardware question

Hello all. I may be making the switch to suse server 9 enterprise. Have a need to run Coldfusion MX 7 and don't want another server.. SUSE 9 Server Ent is a supported platform BSD isn't :( I noticed that the Suse Box comes with both i386 and AMD64. Naturally I was leaning towards AMD64 version. Now I am running FreeBSD-AMD64, very well on a system: Gigabyte AMD 8111/8131/8151 / Socket 940 - 2x Opteron 2 Gb Regsitered ECC 3Ware SATA RAID Controller (Mirror) with (2) 250Gb WD Raid Edition Drives. ATI 128Bit AGP Video Card (X Accelerated) Anyone see any major issues with my hardware? Dare I ask if the AMD64 linux kernel for suse is tuned "as good" as i386? Any thoughts etc are welcome. Regards, Eric