Addendum:

> I've yet to find numeric floating point performance figures for the e5500. All I
> know is that compared to the e500mc the e5500 has twice the single precision
> performance per clock and up to quadruple the double precision performance
> per clock. But I don't have any real numbers for the e500mc either.

Now I have:

http://www.freescale.com/files/training/doc/MULTICORE_MORE.pdf (page 28)
http://www.freescale.com/files/training/doc/POWERQUICC_TO_QORIQ.pdf (page 47)

e500mc: 1 MFLOPS/MHz in SP; 0.5 MFLOPS/MHz in DP
e5500: 2 MFLOPS/MHz in SP; 2 MFLOPS/MHz in DP


On the matter of DMIPS/MHz figures I find it odd that the two documents have contradicting figures: table in 1st linked file has the well known ones of 2.5 for e500mc and 3.0 for e5500, whereas table in 2nd linked file has figures of 2.3 for e500mc and 2.4/2.9 for e5500 (and lacks information why for e5500 there're two figures instead of just one).