Do you know which CPU you have, and how fast it runs? And is it fast enough to run Windows 10 at a capable clip? The latter question we can answer right away: As long as you have a PC-compatible CPU manufactured in the last five years, there’s little reason to think it can’t run Windows 10. The minimum Windows 10 processor spec is just 1GHz, after all.
There are some restrictions for older processors, though, and in these cases you’ll want details on which CPU you’re running. Sandy Bridge processors from 2011, for example, can run earlier versions of Windows 10, but those chips have been phased out and aren’t supported by newer builds of the operating system.
Source: Computing – PC World