tullphan,
well the tforce 570 board is the newer chipset. youll probally get better support for the 550 because its been around longer though!! i have no personal expierence with these boards but from what i can see in the specs the 570 has a better audio chipset, 570 has a fatter rebate (if you really think your gonna fill it out!!!), 570 is SLI so at least you have the option, the 570 is a little bigger all the way around,but only by half a inch on both sides if that matters to ya, the 570 also has more 3.0 sata ports for raid setups. i would say go with the 570 cause it has everything the 550 has ,but updated newer versions and the option of sli!!! sli is a great technology, i love it!!!! LOL you may want to look into the ECS 570-SLI board cause it runs at about the same price and ive personally built a couple for customers and i have to say it was setup real well and it gave me almost no trouble after i set it up. i havent gotten a complaint yet from the people that i built them for. anything you need to know about that board i can tell ya, but with these biostar boards your on your own. good luck to ya though with whatever you decide and keep us informed!! --------------------------------------- ACID -------------------------------------------