IMHO, the Intel is superior since it is a part of the Intel South Bridge
chipset whereas the Promise controller runs on the PCI bus (I would disable
the Promise controller in the BIOS).
FWIW, I am running RAID 0 Raptors, two IDE optical drives and a backup PATA
HDD off of the Intel controller and they all work great.
For your consideration: While I am running RAID 0 Raptors with that same
motherboard, I will not utilize them again in RAID 0 when I routinely reload
Windows from scratch in a year, since I do not do much video editing and
recent articles in Maximum PC magazine (October, page 72), Anandtech.com and
Storagereview.com show that after extensive testing that RAID 0 is no
faster, and may actually be slightly slower, for gaming and routine computer
use. Wish I had known that before I set up my RAID system a few months ago.
Good luck,
MikeSp