I had a zotac graphics card with a built-in fan (about 3 years ago) in which the fan died but the card kept working. It would screech like crazy and get really hot. I tried to RMA it but I lost the receipt, I asked to buy just a fan replacement but they didn't sell them. So I was SOL. As for the new cards, I'm not sure if they shut down or not. Keep your receipts!