What is the 1.7GHz 7447 really worth ?

In order to convince the few G4 MDD users not to wait for the 7447A based cards, Gigadesigns has published a few details on the performances of the L3 cache deprived 1.7GHz dude.
As we initially suspected, it roughly equals to a G4 7455 at 1.47 GHz with L3 cache.
However, the 7447 sucks 40% less power.
It's anyway kind of obvious that pushing a 1.73GHz upgrade card was more of a marketing coup than a real performance feat.