A used RTX 3090 runs $1,000 to $1,600 right now. Renting the same card runs about 10 to 50 cents an hour. So how many hours before buying actually saves you money? New video: I worked it out across the whole range. - Against a typical 20 cent marketplace rental, a used 3090 pays for itself somewhere between 8,000 and 13,000 GPU hours. At four hours a day, that's six to nine years. - Against a 50 cent data center machine, it's 2,400 to 3,800 hours, so owning wins much sooner. - Count the hours the GPU actually works, not the hours the PC is on. Most of us use a card in bursts. - Your power price moves it a lot. At California rates, running your own card barely beats renting at all. - If you rent, keep your models on a volume, and remember a stopped machine still bills for its disk. For most people starting out, renting is the cheaper way in. Prices move every day, so check them yourself before you buy anything. Any questions? Let me know. Cheers, Kawika