3 ms·With a 4:3 ratio, probably a T60 or a T61.by phaus 6y agoWith a 4:3 ratio, probably a T60 or a T61.markrages 6y agoRight on. T61, with one of the best thinkpad keyboards ever.flanker 6y agoThose keypads, you could throw anything to them and they would still give you that travel, click and satisfaction.