Thank you young spade, while you were sending this I searched "sandy bridge" on wikipedia & understood that the name "Sandy Bridge" is only a code name & that it's(the code name) not used by manufacturers..
Since you say that MBA have ULV, Is choosing the MBA over the MBP (with the specifications on an earlier comment) better or what???
I would like to know your opinion??
Thanks for your effort & the picture you uploaded🙂..