G580 series from lenovo company is a good product it having 4gb ram with core i3 processor and also having 500gb hard disk and running good with Windows 8 operating system.it is easy to use and also customer service and support are also good.Everything is fine in laptop but one thing is some high definition games are not playing in this laptop this is only negative feedback remaining everything is good I have bought this product in last year upto there is no problem battery backup is good look also good my suggestion is one of best laptop go for it.