What specs are needed for decent League of Legends gameplay

[e-coli]

What specs would you recommend for league of legends?

-e-coli

It is also fine to specify a computer model from a brand. E.G Dell Vostro 240. And laptops are also acceptable.

 

[AntiZig]

depends on your defenition of "decent gameplay"

I'd say for 1280x720 a 630 is a bare minimum