Nintendo ARM (1048 0H)

ok so this is the cpu for the 3ds. since nintendo hasn't OFFICALLY given any specs on the cpu i have done my research. most people go with the believed RUMOR(since it hasnt been confirmed by nintendo) of 536 mhz(2x ARM 11 @ 268mhz). but i have done research from multiple sites and there are people that believe this.....

Nintendo 1048 0H ARM CPU

(ARM11 family)

The ARM11 processor family

delivers a range of performance

from 350 MHz in small area

designs up to 1 GHz in speed

optimized designs in 45 and 65

nm.

some believe the cpu in the 3ds is or can be optimized up to 1ghz. so my question is what do you guys believe? there were those early rumors before the handheld was announced about it pumping out xbox360 level graphics. also there is a rumor going around that nintendo is unlocking some extra power(rumored 25%) for developers to use in the near future. i just want to know exactly what type of power does this system truly have since nintendo is so tight liped.