Sorry you guys are correct - its 16X and 8X respectively.
A8N SLI Premium
4200+ X2 @ 2.2Ghz OC'd to 3.0Ghz
OCZ 4GB DDR 500 OC'd to DDR 540
1x BFG OC 8800 GTS 640MB
Total HD space 1TB
OCZ 1KW Elitestream PS
well in that case, you won't have a huge bottleneck, but i think your cpu may hold back the cards a bit.