Star Citizen has just updated its minimum system requirements and they appear rather easy-going: a quad-core CPU of unspecified age, a GPU with 4GB of VRAM, and 16GB of system memory. Many modern systems quite happily conform to that specification, especially with the developers noting a few examples of graphics cards that meet the requirement, including the GTX 1060, RX 460, and Arc A380.
That's the absolute bare minimum hardware required to run the game, as per the developers (via KitGuru). Though you probably won't get far even if you do meet them. Take a look at the Star Citizen subreddit and recent threads would suggest anyone with a similar specification PC may run into some performance issues. In a thread noting the need for updated system requirements, you'll find multiple mentions of how 32GB of speedy RAM is much more a requirement to enjoy the game with a modicum of performance than anything else.
