You may have difficulties with the choice of a CPU, you will solve them by seeing the full test Intel Core i3-8109U Cinebench r20 score single and multi core and decide is it a good CPU or a bad one to buy, how powerful is this processor. Here you can find useful information from Cinebench r20 benchmark. A thorough review of all the technical characteristics, so that it can be easier to understand, is made by the table. After reading the results of parallel test and video, you can already make an briefed decision about do you need to buy Intel Core i3-8109U or not.
All the number in the table above do not mean that taking them into account you should totally trust a simple quantitative comparison. Better to watch the testing video and read the reviews of real owners of Intel Core i3-8109U before making a selection buy this processor or not.