This is my 6 year old PC having old specs of i3 5th gen paired with 4gb RAM and 1tb HDD that lags like anything.
Now I have upgraded Ram to 8gb and paired with Samsung latest sata Neo SSD (512gb) that kicked the performance of my old laptop to a brand new one.
I can literally see the change of boot speed from 10+ mins to 10 seconds.
you can also try it with your old PC or laptops with old HDD and Ram to a new SSD that improves your old PC and saves your money from buying a new PC.
The link to buy the SSD is here : Samsung 870 EVO 500GB SATA 6.35 cm (2.5") Internal Solid State Drive (SSD) (MZ-77E500) https://amzn.eu/d/4HFt8qo