chungsae123 :
Can the i5 multitask? Download things while watching twitch.tv and play games while multitasking chrome?
Sure. Chrome sucks the life out of computers, so it will slow things down. Gaming needs most of a CPU if you want the best out of the game.
it can do everything you asked, but that is not the best way to use a computer. So if you do use it that way, accept the results as not being ideal.
If you are buying a new PC. Get one based on coffelake CPUS like the i5-8400 or i5-8600k.
Regardless, get one with good, fast ram at ideally 16gb. And a very good graphics card (1050ti or better)