impossible bro..
on the mi.com/my stated below,
Qualcomm Snapdragon 800 8274AB 2.3GHz processor, Adreno 330 450MHz GPU, 2GB LPDDR3 RAM, and eMMC 4.5 flash memory.
Experience your favourite games and apps at blazing speeds with the latest and most powerful processor from
Qualcomm - 8274AB.More over, 801 is 2.5GHz
Xiaomi won't switch it to 801 just for Malaysia,
Below is bias
» Click to show Spoiler - click again to hide... «
more over all our phone are not recent build, why only available Silver Colour for us?
There is a high chances that too many unit produce and cannot sell in China, hence they clearing their stock in Malaysia.
It too hardly to have an Official ROM bricked your phone, unless you install other apps that overclock your processor

KitKat is good actually, i like it so much compare to stable rom.
i got the answer but saja wanna test ur power... lol