HP's documentation says that CPU is supported, so you should be okay on that end. The Nvidia chipset it uses wasn't the greatest but you should still see a healthy bump in performance. You will be using more power, so if your power supply is low wattage, and if it's as old as the system, it might be worth thinking about getting a new one. Make sure you have an appropriate heatsink/fan for it too, if it doesn't come with the stock cooler. Also, replace the CMOS battery if you haven't already done it. And update your motherboard bios if by some chance there's a newer version available.