However, you can't get them right now and there haven't been many announced. It adheres to the new PCIe 5.0 high power standard capable of sustaining 600W down this single cable and will become more common on ATX 3.0 power supplies. The power connector on the RTX 4080 is a 12-pin 12VHPWR. Check with your manufacturer to see if they're doing the same, in the long run, it's probably a better solution.
Corsair, for example, has already confirmed plans to do just that. Some companies will be offering cables for their existing power supplies that will negate the need for this adapter. And at least it means you don't need to get a power supply that, at the launch of the RTX 4090, barely exists. It's messy, but it's necessary right now. You'll also need to run four PCIe 8-pin (6+2) power cables from your power supply into the adapter, then the adapter into the RTX 4090. You'll be connecting the adapter in the box between your RTX 4090 and basically every power supply out there right now. However, since you're likely pairing it with some other high-end hardware, realistically, you're going to be looking at 1000W+ to give yourself some headroom. The Nvidia RTX 4090 Founders Edition from Nvidia is rated at 450W, and the company recommends a minimum of an 850W power supply in your PC with the RTX 4090.
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