Speed difference between FireWire 800 converted to thunderbolt and USB2

I just bought an iMac and I'm trying to access an older array I have that has either a USB2 connector or a FireWire 800 connector.

My question is this is- will the FireWire 800 used in connection with this thunderbolt to FireWire adapter be faster than the direct USB to connection or should I just stay with a USB2 and if so how much faster?

Apple Thunderbolt to FireWire Adapter

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  • Best Answer:

    FireWire will definitely outperform a USB 2.0 connection. USB 2.0 had serious bottlenecking issues that made it terrible for large file transfers. Even with the conversion from Thunderbolt to FireWire, Thunderbolt enough speed to provide full FireWire 800 speeds to the port. USB 2.0 had a max speed of 480Mbps (Megabits, meaning real world 60 Megabytes per second), where as early version of FireWire 800 provided 786Mbps (98MBps). Overall you should get better performance through FireWire to transfer large amounts of data. USB 2.0 rarely ever reached it's full output due to cheap parts being used in hard drives and flash drives that maxed out and underperformed.

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