This is what 4 GB of RAM (on the Asus ZenFone 2) lets you do: heavy multitasking
To prove what the Asus ZenFone 2 and its 4 GB of RAM can do, YouTube user L BS recently uploaded a video that showcases the handset's excellent multitasking capabilities. In the video, you'll see no less than five graphic intensive games played alternatively, without being closed, with no lag whatsoever. The games are FIFA 15, Real Racing 3, GTA San Andreas, N.O.V.A. 3, and Asphalt 8.
Sure enough, no one really plays five games at the same time. But it's clear that, if you need a smartphone that excels at multitasking, you may want to give the Asus ZenFone 2 a look or two.
Asus has yet to officially release the ZenFone 2 in North America, although it seems that you can already buy the model with 4 GB of RAM from Amazon, unlocked, for around $400. We'll probably review the Asus ZenFone 2 pretty soon, so stick around if you want to find out more about it.
source: L BS (YouTube) via Android Authority