I personally don't trust TigerDirect, they have been known the sell gray market products on many occasions and I also find a bunch of really uncommon, eye raising parts there.
10 bucks says that's another manufacturers card that got RMA'd and they're now passing it off as "nVidia" 6600.
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