I would chalk it up to a GPU burning out if it was one, but TWO cutting hashrate to the EXACT (about half) rate at the same time? Something seems off. I've tried stock BIOS, Boysie Low Power, Boysie 31.25 and Boysie 32 ROMS. All result in 16.3 MH/s on TWO reference cards. I haven't looked to see if same brand but I don't think it matters. Anyone have same experience? Anything happen this afternoon that would cause this? Thanks for any feedback. If none, at least if others experienced same thing, we can compare notes.