What specific hardware or software is needed to speed up my PC?

The hardware or software needed to speed up your PC will depend on the type of computer you are using, its hardware specifications, and what you need it for. A general rule of thumb is that faster processors, more RAM, and bigger hard drives will generally improve system performance. Installing or upgrading to an SSD (Solid State Drive) can make a noticeable difference in speed. Additionally, installing a good antivirus program, optimizing your system settings, and clearing out temporary files and programs can also make a difference in performance.