diglloyd has updated its series of Mac Performance Guides with a new article covering the performance of several eSATA cards available for the MacBook Pro. The guide looks at three different models, including the OWC Slim ExpressCard to eSATA Adapter ($28), Sonnet Tempo SATA Pro ($198), and Sonnet Tempo SATA Edge ($50). Testing is said to show that in all cases eSATA cards outperform FireWire 800, but due to the MacBook Pro's low-bandwidth ExpressCard/34 slot, top performance is only between 45 and 70 percent of the fastest peripherals for the Mac Pro. Out of the thr
