So I have a 2 years old computer and I'm looking to get better fps.
Since I cant really buy a new computer I should (for what I know) upgrade my cpu.

My computer is Acer Aspire M3910
I have some i3 3,20GHz cpu in it
I have an ATI Radeon HD 5570 Graphics card

I hope this information had some sense in it since Im very unfamiliar to pc hardware and specs

So im looking to upgrade my i3 to a i5 3570k since it was the most recommended one.

So to the point of my thread: Will the i5 go with my computer or do I have to buy a new motherboard (or something else) and is there anything I should consider if/before buying a new cpu

I have never built a computer nor upgraded one, but I have some kind of idea how to go on about working with a new cpu after watching and reading some how to's

Side notes: I'm considering buying a 120hz screen in the future, would i get the recommended 240fps with the new setup?

more ultiduo pls

I have a i3 quad core. I have no idea what you mean by "previous resolution" but Im playing the game with my native 1920x1080 resolution. Im hesitant to buy a new card since I have newer built a computer nor upgraded one.

I've been thinking about investing in a 120hz monitor but I don't want to get f'ed out of my money for a monitor that doesn't go with my computer. So can someone please help and tell me if its worth it for me.

My fps stays somewhere around 100-120- (capped to 120) dropping to 70-90 when there's a whole lot of action going on, like middle fights for example. (with high frames + all the fps booster stuff)

My graphics card is ATI Radeon HD 5570 if that matters

I thought about buying the BenQ 24" XL2411T if all this works out...