The picture says 0-0 Cayman, which is a 6900 series GPU, and a 379 Hashrate so I can imagine its a 6950, Unlocked 6950, or a non-OC'd 6970.. From what I can tell, he's doin it right.
And yeah, 1 Core on the CPU is all you need for affinity.. Use the same core for all other addition cards if you ever add them..
And copy the line below into your flags
-v -w128 -f0
Mea culpa - I missed the crunch rate
H.