Mark, I agree, the 7290 must not be using the same chip or it is not running at the same clock speed. I noticed on the ARM9 processor specifications that their are two versions of the core, one at .13micron and one at .18 micron. The former has a minimum speed of 250MHz and the latter 200MHz. Could be they use different cores depending on when the chip set was made? Alternatively, they may use a different chip set alltogether.
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