While you can search online to try to find out which CPU is compatible with your motherboard, there's a more accurate way to get the correct answer. Once you know what motherboard you have in your computer, you can find the manufacturer's website. There you should be able to find a list of compatible CPUs for your motherboard. I wouldn't trust any other source other than the motherboard's manufacturer. The manufacturer is the company who made the motherboard. For example, Acer and HP are common manufacturer names.