I've got 3xATI 6990 in my RIG.
as somebody already said:
His picture in the signature shows now: 2314 Mhash/s
Some calculation reveals: 2314 Mhash/6 cores = 385,6 Mhash per core.
Don't believe some blury pictures.
but
if you wanna go faster try kernel phatk 2.1 or later 2.2
https://bitcointalk.org/index.php?topic=7964.0