Benchmarking and stress-testing software
If, on the other hand, you built your own PC bit by bit, you don’t have to worry about bloatware—but you do have to worry about the quality of all those shiny new components. For instance, is your precious new graphics card unstable? The right software can put your PC through the paces and make sure everything is running as it should be.
The programs you’ll need are too varied to list in full here. Check out PCWorld’s guides to stress-testing and benchmarking your computer for tips and software recommendations alike.