Would getting the 660 be worth the extra investment? I am on a budget, but if it is worth it I'm willing to throw down the extra money.
660: http://www.newegg.com/Product/Product.aspx?Item=N82E16814130826&nm_mc=AFC-C8Junction&cm_mmc=AFC-C8Junction-_-na-_-na-_-na&cm_sp=&AID=10446076&PID=3938566&SID=
750 ti: http://www.newegg.com/Product/Product.aspx?Item=N82E16814121855
660: http://www.newegg.com/Product/Product.aspx?Item=N82E16814130826&nm_mc=AFC-C8Junction&cm_mmc=AFC-C8Junction-_-na-_-na-_-na&cm_sp=&AID=10446076&PID=3938566&SID=
750 ti: http://www.newegg.com/Product/Product.aspx?Item=N82E16814121855