QUOTE(briantwj @ Dec 21 2012, 12:03 AM)
Guys, what is your remaining ram size?
Mine running on 4.2.1 and rooted. Only 413mb free ram left. @@
tapping at the task killer at most juz 459mb.

before this i swear i saw 600+mb left.
So... The main point here is...
Did you ever feel extreme lagginess on your Nexus 7?
Did you ever find any apps closing itself because of lack of memory??
I doubt so... Why complain when there's no problem? Why get bothered about the figures? It is NOTHING!!!
Yea... in phones with 512MB RAM, this figure tells a lot. But in most of the 1G RAM phone, it isn't a problem unless the manufacturers tangan gatal let their stock apps overload the RAM. Btw... 400MB, is even enough for you to buffer whole youtube 1080p songs or even 10mins clip into it. It's a lot actually!
My advice: Just use it like it is UNTIL you found a problem... THEN, only you SEEK for solution.