>i have seen some ppl in this forum claimed that their 660 sli performs worse. and we have no idea why
>some games dont utilize SLI
>and 2x660 actually has 2GB and 192-bit usable
If you don't plan to overclock, you can go with this build. Not sure if you absolutely have to order only from TigerDirect. If you live near a MicroCenter, you can get the 3770k for @229.99 and $40 off select motherboards.