The author of the Overclockers website tested NVIDIA GeForce GTX 1660 and AMD Radeon RX 580 video cards in games. They worked in conjunction with
Models were tested in resolutions 1920 x 1080, 2560x 1080 and 2560 x 1440 pixels. The games used for the test were Crysis Remastered, Far Cry Primal, Horizon Zero Dawn, Iron Harvest, Mafia Remastered, Project Cars 3, Tom Clancy's Ghost Recon Breakpoint, Total War Saga: Troy.
The author has compiled a diagram of the geometric average performance of video cards in eight games. It shows that with and without overclocking the GeForce GTX 1660 is faster than its competitor.