Nvidia clears up concerns regarding power supplies and next gen GPUs

pcgamer.com:

Prior to the official reveal of Nvidia’s RTX 40 series(opens in new tab), there were some disturbing rumors(opens in new tab) floating around regarding their power consumption, particularly the AD102 equipped RTX 4090. Thankfully, the most outlandish of those rumors didn’t come to pass. We won’t be seeing 900W GPUs this generation, though there’s surely the 4090 Ti to come, so never say never.

Nvidia posted an FAQ on its support page(opens in new tab), and it addresses the concerns users may have regarding things such as the minimum wattage requirements, connector durability and compatibility with existing power supplies. The bottom line seems to be, if you have a good quality power supply now that meets the minimum wattage requirements, it should all be smooth sailing.

Beginning with the wattage. The RTX 4090 carries a TGP of 450W, the 4080 16GB draws 320W and the 4080 12GB draws 285W. These numbers have led Nvidia to set the minimum PSU wattages at 850W, 750W and 700W respectively. That’s more or less the same as equivalent RTX 30 cards. The RTX 4080 12GB (opens in new tab)really should be called the RTX 4070, but I digress.

Another major PSU question relates to 8-pin to PCIe Gen 5 16-pin adapters and compatibility. Nvidia says the adapters have circuitry to quote: «translate the 8-pin plug status to the correct sideband signals according to the PCIe Gen 5 (ATX 3.0) spec.» It can also tell the GPU whether three or four 8-pin connectors are plugged in. If four are detected (for 600W in total), it allows the card to unlock more power headroom for overclocking.

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