I have the AbitKR7A "Via Crap" and daily work with Video files over 1 gig with no problems. This is on a Raid 0 stripe between 2 30 G maxtor 7200 rpm drives. I have heard much of the latency problem, but have never seen it. Just lucky? I dunno.
VapoChill/XP Pro OS
AbitKR7A /2x256 2.2.2. Mushkin PC2100/DDRHP
Plextor16xCDRW / PioneerDVD
100GB WesternDigital SpecialEdition7200HDD
Turtle Beach Sound
Channel Well 420PSU