Got them clocked to 700MHz but they seem to be working their way down. They will hold then one will reset and work up to a lower MHz. Then the next one. Is it the voltage ? Or do I need to change the start MHz up to around 700MHz? After a while they stopped around 650Mhz and been holding it.
What USB Hub/Port are you running them on? that speed is pulling some serious current. Even on a full Gekko Hub (6 sticks) I'm limited to 530m per stick due to regulator/port limitations.