Is it worth defragging my hard drive to speed up my PC? By YL ComputingSpeed Up PC Yes, it is recommended to defrag your hard drive periodically. Defragging can improve the performance of your PC by rearranging fragmented data on your hard drive so that it can be accessed more quickly and efficiently. Related Content:How do I adjust the power settings on my PC for better performance?Does defragmenting help improve PC performance?How can I speed up my computer's performance?