I have purchased this lappy in december 2015 from amazon india.this is a very veey fast lappy I have ever used.it has a intel core i7 processor and has a clock speed of 2.5 GHz with 3.7 GHz Turbo boost.this is a quadcore lappy and has a 6 M of cache memory.
With on board 16 GB DDR3 RAM installed on it.this all specifications makes this lappy super fast and this has never hanged for a single second while I am using it.it has 512 GB of SSD for storage which is very very fast in file transferring and receiving.it has a 2GB DDR5 AMD Radeon graphic proceesor.it is a 15.4 inch display having a 2880×1800 resolution screen of retina type.this is 64-bit architecture.it has two USB 3.0 ports.