it is real close to the mac 15. i have one of those also. actually the mac is a little faster, even though it is 80cc. the clinton is around 95cc. they are both real dogs, though, i think cause of the intake design. i have a mac 1-41, made around the same time, and it is 80cc also, but it will flat out spank either one of these saws at half throttle. i will tell you though, i believe the clinton to be the loudest chainsaw ever made, period. 30 seconds with no ear protection, and you will be seriously hurtin in the hearing department. but it is a kick to run.