Hp. The hp450s is my 2nd laptop till now. My first laptop that used was hp1000.from my oppinion this a very good laptop and I am satisified with its features.vit has core i5processor. Which is prity good. It has 4gb ddr3 ram.i use it with window8. And it does work good.it has intel hd graphics 4000. Which run heavy games very well. I ran farcry4call of duty ghost. Its screen size is 15.6inch.which show every video and pictures in detailsCons I hate about this device doesnot come with windows pre installed. The fan in this device is a bite noisy and it annoyes when I am doing my work at quite situation. Ovetall I just want to say that if you are a hp lover than go for it. But this laptop is not for everyone. This is my honest oppinion.