![Usb 3 transfer rate in mb](https://kumkoniak.com/11.jpg)
We ran the same tests again, but with the USB drive attached to each of two hubs. ran a series of tests with it connected over USB 2.0 and USB 3.0 directly to our MacBook Pro. The same series of tasks (more details below) were run first on a 2.5" Hitachi 7200 RPM 750GB spinning drive, then an OWC Mercury Extreme Pro 6G SSD (actual models may vary), through the following connections: Macworld asks the question, " How fast is USB 3.0 really?" - and thanks to their work, we may now have a better idea given some real-world working conditions. Click below to see how USB 3 measured up. But in the meantime, the question stands: how does USB 3.0 compare in actual performance to Thunderbolt, and should you be in a rush to upgrade? Thanks to the guys over at Macworld, we now have some practical benchmark tests pitting the protocols against each other. Both USB 3 and Thunderbolt leave the transfer rates of yesteryear in the dust, with doubled speed in the works for USB 3.0 for a current-Thunderbolt equivalent 10Gb/s and doubled speed coming for 20Gb/s Thunderbolt rates.
![Usb 3 transfer rate in mb](https://kumkoniak.com/11.jpg)