In brief: Remember the GeForce GT 710, the Kepler-based graphics card released in January 2016? It arrived with a launch price of $42, giving you an idea of its gaming performance. It can, however, run Horizon Zero Dawn pretty well---providing you knock the resolution down to a calculator-like 128 x 72.
YouTube channel zWORMz Gaming created a video testing the GT 710 with Horizon Zero Dawn at different resolutions. The game recommends a GeForce GTX 1060 (6 GB), though the minimum GPU requirement is a GTX 780 (3 GB).
With its 3GB of DDR3 and 192 CUDA cores, the GT 710 turns Horizon Zero Dawn into a slideshow at 1080p with maxed settings, moving between 2 - 3 frames per second, while dropping to the lowest settings adds just 2 - 3 extra fps.
Did you know the PC Version of Horizon: Zero Dawn lets you toggle the resolution to 72p? (256x144) pic.twitter.com/3nYccHPQDZ
--- St1ka (@St1ka) February 6, 2021
Guerrilla Games' title remains unplayable at 720p with an average of 8 fps, and 360p, which looks pretty grim, averages 12 fps.
Frame rates get closer to that 30-fps target at the hideous resolution of 256 x 144. But for comparatively smooth gameplay, 128 x 72 is the best option. The trade-off being that the game's so fugly, it makes classic Minecraft look like Assassin's Creed Valhalla---even the text on the Wayfinding Stones is difficult to read.
The Verge notes that the 2001 Game Boy Advance had a screen resolution of 240 x 160, while modern color graphing calculators such as the TI-84 Plus CE boast displays around the 320 x 240 mark, so Horizon Zero Dawn would look (mildly) better running on one of those devices.