With an 8 core CPU @1.6Ghz, compared to the current Xbox 3 core @3.2ghz...how much more performance can we expect out of the Xbox 720?
The graphics card/s seem up in the air, but only on par with the radeon 7800?
I know the ram should be 8gb or 16gb.

With the above specs, how much more processing power can developers pull out of the next gen Xbox?

For example: you would be able to triple your light sources in the editor, the textures are very large and more clean, 3x as many objects allowed, the rider has 2x the polygons.

1.6ghz isn't fast, but with 16 threads and the CPU dedicated to just gaming, I'm sure it's a deceiving number....so I was hoping for some feedback from someone with some knowledge in this area.
Long post...whoops.