Give me four differences between fourth and fifth generation computers

The new process, combined with architectural enhancements, enables the 5th Generation Intel Core processors to deliver up to 24 percent better graphics performance, up to 50 percent faster video conversion and battery life that is up to 1.5 hours longer ". Consumers who are planning to refresh a 4-5-year-old PC will also notice significant improvements: graphics performance up to 12 times better, video conversion speed up to 8 times faster, productivity performance up to 2.5 times faster, wake times 9 times faster, all with up to 2 times longer battery life. So its better for mobile devices to use these 5th gen processors over same U series 4th gen processors ... as think is that processors to great relational of computer.