The power processing element PPE is also called PPU power processing unit sometimes https://en.wikipedia.org/wiki/Cell_BE#Po..._.28PPE.29
Also, just to be perfectly clear the PPU is just one core, it is multi-threaded in a fashion comparable to the Pentium 4 HT, so it's 2 logical cores and 1 physical core
Also, just to be perfectly clear the PPU is just one core, it is multi-threaded in a fashion comparable to the Pentium 4 HT, so it's 2 logical cores and 1 physical core