Upgrade PC's

Hai all, I plan to upgrade my pc since my current pc is way too old for new game. My current rig i7- 4770 Gtx-760 Msi Z97 gaming 8gb ram I plan to change my gpu to 1660ti. The problem come is it will bottleneck my cpu or not. Or i need to change my cpu also ? I always play game in 1080p no plan...