Why is it that PM (even with the latest version which is 5.5c) is always around 10Mh/s slower (on a Zotac 1060 6GB 6+7 card rig) than T-Rex's both with the same OC setups and straps on. I had been using PM all along and realized only a month ago that after all, it is NOT the fastest miner as it claims to be. Not to be a critic but I'm very curious why such a big difference?