Yes, in general, refurbished CPUs are just fine. In fact, many companies sell 'refurbished' computers that are simply last year's model with a new warranty. So if you're considering buying a refurbished CPU, definitely do your research to make sure it's coming from a reputable source. There are a few things to keep in mind when buying a refurbished CPU, though. First, make sure that the company offers a good warranty; something like 30-60 days is usually pretty standard. Also, try to find out how the CPU was used before it was refurbished.