I recently replaced my Samsung 830 120GB with a Samsung 840 EVO 250GB. The Black Magic scores are a bit odd. With my new SSD, the write speed starts at 500, then drops to 275 after about a minute and consistently runs at that. I made sure I installed the latest firmware with that fix they were talking about, although I think that was to fix the read speeds slowing. Anyone know why this might be? I'm only using about 40% of the capacity. Thanks!