bkmoore writes: Other World Computing has just completed some of their first tests Thunderbolt via target disk mode. Target disk mode basically lets you use a Mac as an external HDD. For the review, they tested a Macbook Pro with an internal 6G SSD in target disk mode connected to a 27" iMac with the official Apple-approved cable. Surprisingly, the benchmark speed was 74 MB/s reads and 49 MB/s writes which is only about 4-6% of the full throughput of the Thunderbolt interface and not much of an improvement over FireWire 800 speeds. This was just one quick test, so more will be needed to get to the bottom of this bottleneck.