Need Raid Help!
not sure about the minimum speed part but it can handle the hard drives fine. Just make sure your psu can handle the shock load at startup or you will get raid failure alarms every time you boot the pc.
raid0 isnt really a raid its a stripe set so theres not a lot of actual work for the mobo to do so you'll be fine. If you were asking about a raid 5 Id say get a controller in the $300+ range.