Running Arch off Sata drive on the GoFlex slower or faster?

[yazyazoo]

I just purchased the GoFlex Home which has a 2TB 3.5 SATA built on top of the GoFlex base. I was going to install Arch on it and was looking over the install. It seems to install directly onto the 2TB drive. I was wondering if having Arch run off the SATA drive vs the USB stick is slower? I plan to run Sabnzbd, Sickbeard, Couchpotato with a swapfile which takes a lot of CPU power. Will running the OS and storage for the Sabnzbd downloads slow things down?

Thanks.

[WarheadsSE]

The attached SATA bus is much faster than the USB. It will win in performance, always.