If you want to know the Wii U's specs as of now(however unspecified they are), the go to the Wikipedia entry and follow the source links in the hardware section. You can speculate with that information, other wise we must wait until Nintendo finalizes them at E3.
edit: here we go, Wikipedia makes IBM's unorganized structure much easier to understand, looks like the processor on your dads unit is probably more then one processor, and is probably overclocked, IBM doesn't offer a 4.5Ghz processor in the Power 7 series.
Here is the specs of one single chip
Anyways, I just wanted to prove that SuperSonic56 was posting fake specs in an attempt to provoke me =P noticed how he never replied to me after I posted and proved him wrong.