Based on the fact that you can see they've highlighted the "CPU #1/CPU#2" drop down box, I'm taking a wild guess and thinking it's based on a single core. I'm honestly not sure though.
Phosho510, AMD doesn't have any plans of releasing any dual core processor until the second half of this year, beginning with the opterons and then later releasing the consumer Toledo core which is what's being demonstrated here I think.
Intel C2D E6320 / AMD Athlon X2 3800+
Gigabyte 965P DS3 / DFI nF4 Ultra-D
2GB OCZ Gold PC2-6400 / 2GB OCZ Gold PC4000
eVGA 8800GTS 320MB / eVGA 6800GS 256MB
150GB Raptor / 74GB Raptor
2x500GB / 320GB
OCZ GameXStreme 850w / OCZ StealthXStream 600w