Concerned about hardware : Free trial perhaps?

[Citan]

Given that there's not a demo yet, I think it's perfectly reasonable to buy the game, test if performance is good enough for you, and if it isn't, seek a refund via Steam. But please remember:

• You must request the refund before Steam shows you having 2 hours of time in the game. After that point, it's not possible to get a refund.
• Make sure you experience performance in the large outdoor areas like Serbule before making a decision, as the newbie tutorial area isn't as graphically expensive. Two hours should be more than enough time to get off the tutorial island, but if you're stuck on the island and you're getting antsy to test performance elsewhere, you can use the cheat command /leavetut (type this into the chat window and press enter). This will teleport you to the mainland; you can go back to the island later. But note that the game won't let you use that cheat unless you've already made efforts to leave on your own!
• We definitely don't ban or punish people who get Steam refunds! I don't actually think many developers do that. However, Steam has said that if you request refunds for too many games, they'll stop giving them to you. If you haven't refunded many games, I wouldn't worry about it. I've refunded a few games and my account is fine.
• It may be impossible to re-buy a game that you requested a refund for. (I'm not sure.) In which case, if you get another PC later, you still won't be able to play. (Edited to add: it seems like I can re-buy the games I've gotten refunds for, so it's probably fine.)