I've recently purchased my imac and it came with a Western Digital WD-WCATRA397780 hard drive. My spec: 27", I7 non fusion. I know there are various threads on here stating that the Seagate drives are faster but Im barely getting 75mb read/write speeds through the Black Magic Drive speed test software? Can the difference really be that big? A quick browse on youtube I see some folks with the Seagate getting 198mb read/right speeds. ( http://youtu.be/iYMB8ge9ujg ). I didn't do a fresh install, but instead stuck my time machine backup on from my old 2009 imac which I upgraded from. Will this make a difference to my speed test results and is this software really an accurate way of testing drive read/write speeds? If there are any other WD non fusion owners here, it would be appreciated if you could post your Black Magic speedtest results. Thanx
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