You can play it without. But it will only run on your CPU. So, the generation will be slower! Are you on Windows or Linux?
Sadly, on Windows the technology to use the AMD GPU for AI generation isn’t available yet. I’m waiting for it to be released.
So it’s 100% planned, but I have no idea when I will be able to do it. I recommend you to not buy before that. (You can still try the DEMO and see if it’s ok enough with you CPU)