Processors for the GeForce GTX 1070 at each resolution
At 1080p the cheapest processor that keeps the GeForce GTX 1070 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 10.4% more than the card can use.
At 1440p the cheapest processor that keeps the GeForce GTX 1070 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 33.6% more than the card can use.
At 4K the cheapest processor that keeps the GeForce GTX 1070 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 59.3% more than the card can use.