I am about making a decision to purchase a new phone. I want to be careful with my choice anyway. Can someone please explain the difference between possessor speed of Octa-core 1.8 GHz and quad core 2.3GHz? Which between both phones will be faster based on the processor speed? I tend to imagine that the 1.8GHz will be faster. Meanwhile, I currently use HTC M8 and want to purchase a Nokia 7.1. My aim is to get a fast phone at an affordable cost.