Upgrade wouldn't be huge but may be worthwhile depending on your work load. And yes you would need to upgrade your bios for it to work. As for the how...you would need to update your bios first. Without motherboard model I can't give specifics. Google your motherboard model and bios upgrade/ go to your manufacturers website support page. Then once that is done you would need to detach your heat sink, remove your CPU. Clean all thermal paste off your heat sink with alcohol. Insert your new CPU, reapply thermal paste and reattach your heatsink.