Hi, I just installed a 115GB OWC Mercury Pro SSD as the boot drive on my 2010 Macbook Pro. I had Disk Activity on in the Activity Monitor while transferring files and exporting images etc. Copying images from one folder to another I got peak data reads of 65mb/sec and 60 mb/sec write. Writing to an external USB 2.0 7200 rpm drive got peaks speeds of about 37-40 mb/sec read&write. I understand the USB 2 and 7200rpm max would be about 70mb/second tops(read/write) but how come read-write speeds when copying files to the desktop on the SSD top out at 70mb/second instead of about the advertised 200-250mb/second read/write rates.