Thunderbolt: Does the Cable Length Matter for Performance?
Fascinating results for both hard drives and SSDs.
OWC 30 Meter Optical Thunderbolt Cable.
UPDATE: MPG goofed on the SSD graph. The graph is now corrected. With SSDs, it shows only a minor difference in speed, diminishing with increased transfer sizes to insignificant levels.
Testing using DiskTester, with the revealing run-sequential suite command.