Both will work the same since it is unlikely the routers you attach to will support these features.
To support the most customers people who run open or pay internet wifi set it to run the most common settings. Many people will not even have N so it is likely you will end up running G anyway.
The 300 and especially the 450 are not common features. These are hogs when it comes to radio bandwidth. If they follow the rules most will disable the feature themselves if they detect other routers on adjacent frequencies. It is rare to not find routers on all frequencies all the time. Many people override this setting if they want to use this in their house.
Range and coverage are related to transmission power. Many transmit at maximum legal power but some transmit lower to reduce the battery drain on laptop.
I would actually look at a external USB card. It gives you the option to put the device on a USB extension cable and place it where it gets the best signal. Avoids the problem of having to place the laptop in a strange working position to get enough signal.
What the different in range of those 2 wifi adapter for laptop?
Can I pick up a wifi connection from a place, where it take me like 170 steps ( Not far, as I can walk there in less than 3 min)? - I am aiming 2 bar at least.
In intel spec review all I can tell is adv. n- go to 300mps and 2x2- and ult. n
go- to 450mps and 3x3(third antenna)-. It
doesn't give me enough detail over ranges/coverage. So, from my thought it seem like both are the same, but I am not really sure.
I getting a laptop in few month and want to know the range or coverage area. Price is not an issue because I have will have a few month to build up cash.
I do use my phone for the internet, but it not blazing speed to transfer file like power point, word doc., or even watch hulu over the internet. I rarly at home as I am either at college or work. My work place is closer to a cafe place that offer free internet - like about 170 walking step(not far).