150pcs of A3233-q48 are fitted in a 1TH/s Avalon Miner.
See https://bitcointalk.org/index.php?topic=523309.0
Cost per unit is ca 0.1 USD
Consumption is about 5 watts

So it seems that if each user/miner would be equipped with one chip, the number of users/miners necessary to achieve the same hash power as of today would be 5000000 TH/s * 150 = 750 millions.  That is much less than the number of facebook users !