The Orville was a dual DSP unit as well, but it had significantly less processing power than the current H8000FW. Orville was developed in the mid-1990s and has been discontinued for some time. However, we do offer an upgrade path from Orville to the H8000FW http://www.eventide.com/News/Product%20News/Upgrade%20to%20H8000FW.aspx.
H8000FW has nearly 1,000 more programs than Orville. the H8000FW has FireWire, a faster more responsive OS, sorting functionality, the ability to run both DSPs together for big programs (such as 5.1 or 7.1 etc.), ADAT I/O, more precise word clock, Flash memory support, plug-and-play with our EveNet remote among other things.
If you have further questions, drop me a note at firstname.lastname@example.org or give me a call at 201-641-1200.