lilstewart92 said:
Kinda like saying the PowerMac G5 2.5GHz Quad is 1THz.
Well, the situation with a multiprocessor or multicore computer is slightly better, because there is no huge overhead hit with farming a task out to another cell in the grid, since the processor is already there. A multi-processor Mac will be fairly good at distributing tasks among processors and threads within multi-threaded tasks among processors / cores so that it can use a lot of the raw cumulative processor speed it has....
The big limitation would be when you are doing a single task / process which is intensive and is not multi-threaded. Then, the best you can really do with it is to give it the single fastest core or processor, with the most memory available, in the grid or computer. But since it cannot be split up, it will not run much faster than it would on a computer by itself that had only that one processor.
I think the traditional estimate is that a dual processor computer runs at about 170% the original speed? So a 2.5GHz Quad might be comparable, in terms of CPU power (but not graphics, etc, since it doesn't have four of each subsystem) to a computer running at... ~7 GHz? Something like that?
But with a farm / grid setup, I think it'll be worse than this, in the sense that basic tasks will not be split up (even operating system processes can be directed to one core or another, but they are not going to get farmed out to another cell)....
I think, though, if what one wanted was to run a grid of computers on which to do animation rendering or something of the like, that XGrid and a set of Mac Minis would work just splendidly. If you stack them up, though, don't let them overheat!
