It is nice, i have the ecs rs480-m , based on the same chipset, and it is very good chipset , i got my stability :)
(Rig :
A64 3000+ Venice Core
2*512 MB Samsung
ECS RS480-M
WD 80GB 8MB Buffer SATA)
The Sata is working very well, no needed drivers (IDE mode?)
Havent' tried the Raid ...