Rocketware doesn't
completely disable the host CPU, it sort of enslaves it as an intelligent I/O Controller for the Rocket acting as the main CPU, Accelerating the system.
For a single Rocket with the DSP DaughterCard in the 950, PhotoShop filters would run wicked fast over the PDS connection to the DSP, accessing the Rocket's Local RAM for that type of algorithm.
For a single Rocket with the Fast SCSI II DaughterCard in the 950, Disk intensive apps would see a huge improvement for operations such as searching through a large database. Data would run wicked fast over the PDS connection to the Fast SCSI II ChipSet communicating with an external SCSIII RAID Box, like my Radius StudioArray Boxen. Accessing the Rocket's Local RAM again helps performance in that type of application.
In either case, if the application is not multi-threaded for making use of multiple procs; running a single Rocket off its own onboard RAM, the 950's ROM copied into that RAM and with either of its PDS DaughterCards installed as an Accelerator makes a world of sense. It would put the hard stomp onto any similar NuBus Card based setup in the stock 950, especially running without the Networking overhead of RocketShare.
The reason the Rocket thinks it's a 950, when it's installed in a 950, is that it
has the 950 ROM on board after the
"WHOOOOOSH!!!!!!!!!!!!!!!" reboot takes place.
All that lovely Standard PC RAM on board the Radius Rocket puts it head and shoulders above any accelerator that needed to access System RAM on the MoBo of a host computer. Radius' license to copy a Host Mac's ROM into the faster RAM on board a single Rocket OR multiple Rockets, removes another system bottleneck suffered by any other accelerator.
Unfortunately, Apple took one look at a SkyLab Prototype running umpteen Rockets from a lowly SE/30 terminal and decided to bork Radius'
AppleTalk over NuBus implementation in RocketShare. There may have been other good reasons to overhaul AppleTalk for 7.5 as well, but driving nails into the coffin of RocketShare was right up there on the list!