360 has been clocked at 3.2 GHz CPU
PS3 has been clocked at 3.2 GHz CPU
xBox has been clocked at 733 MHz CPU
Wii has been clocked at 729 MHz CPU
GC has been clocked at 485 MHz CPU
PS2 has been clocked at 294 MHz CPU
DC has been clocked at 200 MHz CPU
360 has 512 MB of RAM
PS3 has 256 MB of RAM
Wii has 88 MB of RAM
xBox has 64 MB of RAM
GC has 43 MB of RAM
PS2 has 32 MB of RAM
DC has 16 MB of RAM
This is just CPU speeds and RAM, not taking GPU, or everything else in account.
But it does show whats more powerfull.

I own all of lastgen systems as of October 2008. (Finally got a Dreamcast)
I own every currentgen system except PS3.











