Beginning with version 0.6.5 of T-REX, the minor began supporting the BCD mining algorithm for Bitcoin Diamond crypto currency. The latest version of T-REX 0.6.6 improved performance for the BCD algorithm by 5%. If you previously used version 0.6.4, then the update to version 0.6.6 will increase your hash on other algorithms X16, X17, X11, Sonoa, Bitcore, Renesis, hmg1725 by 1-3%. You can download the T-REX Miner on the Bitcointalk forum.