I wouldn't be trusting benchmark scores on hardware where's you're aiming to scrape the minimum requirements. Benchmarks and games stress out hardware in different ways. Open world games with a high player velocity (i.e. 300kph+ vehicle vs walking) also bring about unique stresses compared to other games.
Please do not try and use an Intel Atom for PC gaming. It is Intel's equivalent of the type of processor found in modern smart phones. The absolute worst CPU you should be looking at is an i3, if not an older i5, paired with a discreet graphics card. If money is the issue, look for a 5yo second hand gaming PC. A new i3 with HD4000 built-in graphics on its own may be able to play pre-2010 games at medium-low settings with around 30fps. That's if the game developers included any support for Intel graphics - some require AMD/nVidia GPUs.