Full IP that is kept for 6 months can identify your device (computer, phone, etc) quite accurately, depending on who gets their hands on it. Partial IP can only identify the rough location, like your neighborhood or mobile cell. If you're concerned about any of that - make sure to safeguard your e-mail account, stake a Bitcoin address, and check the new checkbox. Use Tor if feasible. Keep in mind that other entities like Google have potentially lots more info about you.