Their are generally 3 types of routers available in the market:
(1) Those that support 2.4 Ghz frequency band
(2) Those that support both 2.4 Ghz frequency band and 5 Ghz band but only one at a time
(3) Simultaneous dual band 2.4 Ghz and 5 Ghz router
And the price increases in that order. A common question is that which to buy ?
in my previous post, I had demonstrated that the 2.4 Ghz network has better range (by signal strength) as seen by client but suffers from more interference which will lower throughput (considerably also). I do not have a number for this because it varies in each deployment environment. its possible in some setup the results would also reverse
If you live in a studio apartment (or single room dwelling) with clients that support only 2.4 Ghz band, and plan to retain both for while then you can go ahead and buy router type (1). It is a obsolete device and will come very cheap also. otherwise you need to decide between (2) and (3).
I would suggest (3) as it is more extensible in nature and can be made to fall-back to (2) by switching off one of the band. Between these (2), if money is a constraint and you can live with operation in either of the two bands, then you may go for (2).
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