A Power supply unit (PSU) is an essential part of any gaming setup, as it provides the power that GPUs need to operate at optimal performance. However, many PC builders often overlook this important component when assembling their systems. This can lead to them getting a GPU that isn’t able to perform at its full potential, or even worse, it may not work at all. To avoid this, it’s important to understand how much power your GPU consumes and what kind of PSU you need for it.
The bare minimum that Nvidia recommends for the 3090 ti is an 850W power supply, but this can vary depending on your system’s configuration. This is especially true if you intend to overclock your GPU or use other high-end components in your build. In fact, Gamers Nexus found that a RTX 3090 Ti can pull up to 365W on momentary peaks for a few seconds during highly GPU demanding portions of games.
Considering that, it’s best to aim higher than 850W and get something closer to 1000W. This will also give you a little wiggle room for any other upgrades that you might want to make or overclocking that you’re going to do. Also, consider getting a PSU with an 80+ Gold certification or better to ensure that it’s capable of handling this kind of power consumption and has good conversion efficiency. These factors will help you keep your electricity expenses low.