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What are the specs of the 802.11n on my mid-2009 13" MacBook Pro? Is it a 2x2 with 5 and 2.4 GHz?

I just ordered the new Airport Extreme which is a dual-band 3x3, and I was wondering what sort of speed I should expect out of it. I'm guessing something like the 2010 MacBook Pro.

Also, are all the MacBook Airs now 3x3?

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The sys info for my MacBook Pro (2009 13") says the Airport uses firmware BMC43xx. Yes that's a Broadcom chipset, but there are a lot that are in that category. I'm still guessing it's a 2x2 model like that above 2010 MacBook Pro. While it's not a 3x3, I think I'd be happy with a 2x2 that was as fast as that 2010 MBP with the new Airport Extreme.

Do the new Airs have the same 802.11n chipsets as the new MBPs?