The Asus X453MA has an Intel Celeron processor family which is better than most comparable spec portable PCs that came out more than a year ago. Most many processor core laptops that are a comparable age to it have an Intel Core i7 processor family.
This portable PC's processor family (Intel Celeron) is in fact the worst processor family amongst all notebook PCs of a similar type and age to the X453MA.
The best processor family across comparable types of portable PC is Intel Core i7-4xxx.
If the processor family of this laptop is not good enough for you then you might want to consider the Toshiba Satellite C55-B (£629.55) (Intel Pentium).