This is very good laptop, I m using this since 2 months, very efficiently working battery back is also gud, it’s operating system is latest i.e. windows 7 home premimum 64-bit eddition the enterface of this version very user friendly even I m not upgrade to windows 8, it has hd display ehich is very good,
And u r not compromise in brand here because u owned a tending brand whicg is lenovo.
Cpu is intelcore i5( 2nd gen) 2410M/2.3 GHz, max turbo speed is2.9GHz, dual core processor.
It has hyper-threading technology, intel turbo boost technology.