Processors for the Arc A770 at each resolution
At 1080p the cheapest processor that keeps the Arc A770 within 10 percent is the Core i5-10300H, with a gaming index of 30. Next in the list is the Core i3-9100F, which is still 8.9% short.
At 1440p the cheapest processor that keeps the Arc A770 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 9.8% short.
At 4K the cheapest processor that keeps the Arc A770 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 28.7% more than the card can use.