yeah you probably dont need something that fancy for a mobo unless you have plans for triple SLI in the future.
a z68 extreme4 or asus p8z68-v, for example, are much more modest but perfectly adequate boards. there are plenty of others, too.
im not sure that the gtx 580 lightning has the dust removal feature. the 3gb model does, but Im not really sure the extra vram and dust removal is worth the money:http://www.newegg.com/Product/Product.aspx?Item=N82E16814127589