what does A12 bring to the table that A11 doesn't. i know A12 is UEFI, is A11 an UEFI or is it bios and will it require reinstalling windows 10 if A12 is downgraded to A11. a guy above mentioned an A13 did he typo or is there another update and if so what's it do? the stock A12 has a metric crapton plethora mega load of overclock options, i haven't the slightest clue what the do or how to find the info on usiging/researching them. might to doa search on the chipset vs the laptop model.