I use this laptop almost 3 years and performance of this laptop is very good the sound quality is too good and the battery is amazing almost 3 hrs gaming performance is good it is very easy to use it contains 4 gb ran and 320 gb hd it’s runs on window 7 ultimate.it has good front camera I love lenovo brand it’s is very stylish laptop. Pelease buy this laptop once. In my family and reletives everybody love to use this brand and recommend it to further their friends circle . It is easy to use and I got best service and support from th customer care.