One of the best rates offered on certificates of deposit for the 6 month term in the Dallas area is from Texas Security Bank.
It is paying 1.25% APY on CDs if a deposit of at least $1,000 has been made. To earn the rate, you will have to meet a few requirements. One is that the money you deposit should be new, not that which is already in the bank. Another is that you should be a resident or employee of a company in Dallas.