What power supply do I need for a GeForce RTX 3090 Ti?

The launch of the GeForce RTX 3090 Ti took place last March 29. In the end, pretty much every leak we saw was confirmed, including those related to its specs, TGP, and also with the adapter of three additional 8-pin power connectors to one of the 12-pin.

Numerous benchmarks have confirmed that the GeForce RTX 3090 Ti performs, on average, 5% to 10% more than the GeForce RTX 3090 depending on the resolution used. The smaller the resolution, the smaller the difference, so the maximum value of 10% is only reached with 4K resolutions.

Its performance values ​​are quite clear, but what about consumption? This is very important information, since it will help us to solve one of the questions most asked by those who are thinking of buying a GeForce RTX 3090 Ti, namely that these They don’t know what food they will need.

GeForce RTX 3090 Ti: your power supply may not be enough

Although the TGP that NVIDIA has listed for the GeForce RTX 3090 Ti is 450 watts, depending on the model we buy, the actual consumption can peak up to 511 wattswhich means that if we have, for example, a power supply of 650 or even 700 watts, we may not be able to move it with guarantees, due to these maximum peaks and the additional consumption of the rest of the components.

To understand it, I will give you a concrete example that will be of great help to you. A rig configured with a Ryzen 7 5800X at stock frequencies, 16GB of dual-channel DDR4, two PCIE NVMe SSD storages, a gaming keyboard and mouse, discrete RGB LED lighting, six fans and a liquid cooling kit Corsair iCUE H100i RGB ProXT It would have a load consumption of 709 watts. This consumption represents the average value and does not reflect any maximum peaks.

If we have a team similar to the one we gave as an example, it would be recommended have at least an 800 watt power supply, because rushing and opting for a 750 watt would be an obvious risk in the face of these maximum consumption peaks. On the other hand, if we plan to overclock, or if we have more fans or a more complex RGB LED lighting system, we would have to opt for models of 850 watts or more, depending on the final consumption.

You don’t need a 1000 watt power supply, but you do need a quality one

Generally speaking, any powerful high-end team that aspires to mount a GeForce RTX 3090 Ti will need, at a minimum, a power supply between 800 and 900 watts, as we have already said in the previous paragraph. However, keep in mind that this must meet other important conditions To ensure optimal performance:

  • When we move in such high consumption, it is essential to choose a quality source since its components will be prepared to support without problems the stress that this type of consumption represents.
  • must have three additional 8-pin power connectorsas we will need it to connect to the 16-pin adapter included with the GeForce RTX 3090 Ti.

With everything we’ve said in mind, you can assess for yourself whether or not your power supply will be able to drive a GeForce RTX 3090 Ti. I want to leave you too a series of recommendations which will serve as a reference when choosing a new power supply, in case you have no choice but to change it to be able to get the GeForce RTX 3090 Ti.

  • Thermaltake Toughpower GF1 850W 80 Plus Gold Modular, for 128.16 euros.
  • Corsair RMx Series RM1000x 1000W 80 Plus Gold Modular for 160.46 euros.
  • ASUS ROG Thor 1000P2 Gaming 1000W 80 Plus Platinum Modular for 366.53 euros.

Alan A. Seibert