Perhaps you can't decide which processor to buy, you can make a choice by looking at the Intel Core i5-8259U GeekBench 5 score multi and single core test and understand how powerful is this CPU, is it a good CPU or a bad one to buy. Here you can find all information from GeekBench 5 benchmark. A step-by-step analysis of all the technical characteristics, so that it can be easier to read, is made by the table. After looking at the data of parallel test and video, you can already make an briefed decision about do you need to buy Intel Core i5-8259U or not.
The summary data in the table above do not mean that taking them into account you should fully trust a simple comparison of these figures. Better to watch the video tests and read the opinion of of people who bought Intel Core i5-8259U before deciding buy this CPU or not.