Recently I just bought a laptop model Lenovo Ideapad y510p SLI US version. The reason I don't buy same model at my own country that is Malaysia because of couple of reason. First let me tell you benefit buying from local version. It will give you 2 years warranty and I cannot get the detail information regarding whether the first years will be international warranty from their website. If you bought from local maybe you can check by yourself at this link. All you need is to input your serial number that is on the back of your laptop.
Ok now I want to tell about the benefit from buying US version. First of all, it is cheaper but a lot of seller like to jack up the price. Second, it got 24Gb SSD and it use for Solid State cache. Generally speaking it to speed up your HDD boot and application speed. As for now if you need more explanation regarding caching, you can read here. Later on I will make my own easy to understand article regarding the caching.
