DS3 has no SLI. It is an excellent OC-er and excellent performer also.
650i is a good OC-er also, but it's SLI oworks as PCIe x8. If you want to use high-end graphics cards like 8800, then you better get a 680i.
HAHAHAH thats right *****! Me and u bet in front of the chicks!!!!!! lololol goooooddddd times!!!!!! haha...but sryy, i get 650i till u get the dual vid. cardssss...thast the deal! lol bye