It’ll be quite difficult to get a viable pc for under $1000. Ensure there’s a minimum of 8 cores, preferably dual cores, so a total of 16. An RTX card or equivalent, and minimum 16 / 32 GB RAM. There’s not enough emphasis I can place on a great monitor that is compatible with the engine and with the hardware you buy. Research and know before buying. This is not all for graphics either, it’s also for internet, audio, multi-tasking, and staying up-to-date with current and future technologies.