Processors for the GeForce GTX 1080 Ti at each resolution
At 1080p the cheapest processor that keeps the GeForce GTX 1080 Ti within 10 percent is the Ryzen 5 1600X (launch price $249), with a gaming index of 29 on the AM4 socket. Next in the list is the Core i5-10300H, which is still 5.6% short.
At 1440p the cheapest processor that keeps the GeForce GTX 1080 Ti within 10 percent is the Ryzen 3 2200G (launch price $99), with a gaming index of 22 on the AM4 socket. Next in the list is the Ryzen 5 1400, which is still 6.5% short.
At 4K the cheapest processor that keeps the GeForce GTX 1080 Ti within 10 percent is the Ryzen 3 1200 (launch price $109), with a gaming index of 20 on the AM4 socket. Next in the list is the Ryzen 3 2200, which is 31.2% more than the card can use.