The hardware specs have been out since last year, no? There were full-on product tutorials at the GDC back in Feb/March from IBM et al, so you should be able to find plenty of detail of what the hardware is by now, and analysis.
Basically, it’s got lots of fast, powerful, CPU cores, so it was always clear it was going to have a very very high processing throughput. Rather than summarize badly and say something stupid through ignorance or poor memory, I’ll leave it to Google to do the talking. Try Ars Technica, IBM, and the other usual suspects…