Can I replace my hard drive with a faster one to increase speed? By YL ComputingSpeed Up PC Yes, you can replace your hard drive with a faster one to increase speed. However, you should also consider other factors that can improve speed such as how much RAM you have, if your processor is up to date, and any potential software issues. Related Content:What are some best practices for speeding up my PC?Is it safe to disable certain programs in order to improve PC performance?How can I improve my computer's memory usage?